diff --git a/lib/services/exchange/TMP.dart b/lib/services/exchange/TMP.dart
deleted file mode 100644
index 868ace14e..000000000
--- a/lib/services/exchange/TMP.dart
+++ /dev/null
@@ -1,389 +0,0 @@
-// import 'package:decimal/decimal.dart';
-// import 'package:flutter/foundation.dart';
-// import 'package:stackwallet/models/exchange/response_objects/currency.dart';
-// import 'package:stackwallet/pages/exchange_view/sub_widgets/exchange_rate_sheet.dart';
-// import 'package:stackwallet/services/exchange/change_now/change_now_exchange.dart';
-// import 'package:stackwallet/services/exchange/exchange.dart';
-// import 'package:stackwallet/utilities/logger.dart';
-//
-// class ExchangeFormState extends ChangeNotifier {
-//   ExchangeFormState(this.exchangeRateType);
-//   final ExchangeRateType exchangeRateType;
-//
-//   Exchange? _exchange;
-//   Exchange get exchange =>
-//       _exchange ??= ChangeNowExchange(); // default to change now
-//   set exchange(Exchange value) {
-//     _exchange = value;
-//     _updateRangesAndEstimate(
-//       shouldNotifyListeners: true,
-//     );
-//   }
-//
-//   bool _reversed = false;
-//   bool get reversed => _reversed;
-//   // set reversed(bool reversed) {
-//   //   _reversed = reversed;
-//   //   //
-//   // }
-//
-//   Decimal? _rate;
-//   Decimal? get rate => _rate;
-//   // set rate(Decimal? rate) {
-//   //   _rate = rate;
-//   //   //
-//   // }
-//
-//   Decimal? _sendAmount;
-//   Decimal? get sendAmount => _sendAmount;
-//   // set sendAmount(Decimal? sendAmount) {
-//   //   _sendAmount = sendAmount;
-//   //   //
-//   // }
-//
-//   Decimal? _receiveAmount;
-//   Decimal? get receiveAmount => _receiveAmount;
-//   // set receiveAmount(Decimal? receiveAmount) {
-//   //   _receiveAmount = receiveAmount;
-//   //   //
-//   // }
-//
-//   Currency? _sendCurrency;
-//   Currency? get sendCurrency => _sendCurrency;
-//   // set sendCurrency(Currency? sendCurrency) {
-//   //   _sendCurrency = sendCurrency;
-//   //   //
-//   // }
-//
-//   Currency? _receiveCurrency;
-//   Currency? get receiveCurrency => _receiveCurrency;
-//   // set receiveCurrency(Currency? receiveCurrency) {
-//   //   _receiveCurrency = receiveCurrency;
-//   //   //
-//   // }
-//
-//   Decimal? _minSendAmount;
-//   Decimal? get minSendAmount => _minSendAmount;
-//   // set minSendAmount(Decimal? minSendAmount) {
-//   //   _minSendAmount = minSendAmount;
-//   //   //
-//   // }
-//
-//   Decimal? _minReceiveAmount;
-//   Decimal? get minReceiveAmount => _minReceiveAmount;
-//   // set minReceiveAmount(Decimal? minReceiveAmount) {
-//   //   _minReceiveAmount = minReceiveAmount;
-//   //   //
-//   // }
-//
-//   Decimal? _maxSendAmount;
-//   Decimal? get maxSendAmount => _maxSendAmount;
-//   // set maxSendAmount(Decimal? maxSendAmount) {
-//   //   _maxSendAmount = maxSendAmount;
-//   //   //
-//   // }
-//
-//   Decimal? _maxReceiveAmount;
-//   Decimal? get maxReceiveAmount => _maxReceiveAmount;
-//   // set maxReceiveAmount(Decimal? maxReceiveAmount) {
-//   //   _maxReceiveAmount = maxReceiveAmount;
-//   //   //
-//   // }
-//
-//   //============================================================================
-//   // computed properties
-//   //============================================================================
-//
-//   String? get fromTicker => _sendCurrency?.ticker;
-//
-//   String? get toTicker => _receiveCurrency?.ticker;
-//
-//   String get warning {
-//     if (reversed) {
-//       if (_receiveCurrency != null && _receiveAmount != null) {
-//         if (_minReceiveAmount != null &&
-//             _receiveAmount! < _minReceiveAmount! &&
-//             _receiveAmount! > Decimal.zero) {
-//           return "Minimum amount ${_minReceiveAmount!.toString()} ${_receiveCurrency!.ticker.toUpperCase()}";
-//         } else if (_maxReceiveAmount != null &&
-//             _receiveAmount! > _maxReceiveAmount!) {
-//           return "Maximum amount ${_maxReceiveAmount!.toString()} ${_receiveCurrency!.ticker.toUpperCase()}";
-//         }
-//       }
-//     } else {
-//       if (_sendCurrency != null && _sendAmount != null) {
-//         if (_minSendAmount != null &&
-//             _sendAmount! < _minSendAmount! &&
-//             _sendAmount! > Decimal.zero) {
-//           return "Minimum amount ${_minSendAmount!.toString()} ${_sendCurrency!.ticker.toUpperCase()}";
-//         } else if (_maxSendAmount != null && _sendAmount! > _maxSendAmount!) {
-//           return "Maximum amount ${_maxSendAmount!.toString()} ${_sendCurrency!.ticker.toUpperCase()}";
-//         }
-//       }
-//     }
-//
-//     return "";
-//   }
-//
-//   //============================================================================
-//   // public state updaters
-//   //============================================================================
-//
-//   void reset(bool shouldNotifyListeners) {
-//     _exchange = null;
-//     _reversed = false;
-//     _rate = null;
-//     _sendAmount = null;
-//     _receiveAmount = null;
-//     _sendCurrency = null;
-//     _receiveCurrency = null;
-//     _minSendAmount = null;
-//     _minReceiveAmount = null;
-//     _maxSendAmount = null;
-//     _maxReceiveAmount = null;
-//
-//     if (shouldNotifyListeners) {
-//       notifyListeners();
-//     }
-//   }
-//
-//   Future<void> setFromAmountAndCalculateToAmount(
-//     Decimal? newSendAmount,
-//     bool shouldNotifyListeners,
-//   ) async {
-//     if (newSendAmount == null) {
-//       // todo: check if this breaks things and stuff
-//       _receiveAmount = null;
-//       _sendAmount = null;
-//     } else {
-//       if (newSendAmount <= Decimal.zero) {
-//         _receiveAmount = Decimal.zero;
-//       }
-//
-//       _sendAmount = newSendAmount;
-//       _reversed = false;
-//
-//       await _updateRangesAndEstimate(
-//         shouldNotifyListeners: false,
-//       );
-//     }
-//
-//     if (shouldNotifyListeners) {
-//       notifyListeners();
-//     }
-//   }
-//
-//   Future<void> setToAmountAndCalculateFromAmount(
-//     Decimal? newReceiveAmount,
-//     bool shouldNotifyListeners,
-//   ) async {
-//     if (newReceiveAmount == null) {
-//       // todo: check if this breaks things and stuff
-//       _receiveAmount = null;
-//       _sendAmount = null;
-//     } else {
-//       if (newReceiveAmount <= Decimal.zero) {
-//         _sendAmount = Decimal.zero;
-//       }
-//
-//       _receiveAmount = newReceiveAmount;
-//       _reversed = true;
-//
-//       await _updateRangesAndEstimate(
-//         shouldNotifyListeners: false,
-//       );
-//     }
-//
-//     if (shouldNotifyListeners) {
-//       notifyListeners();
-//     }
-//   }
-//
-//   Future<void> updateFrom(
-//     Currency sendCurrency,
-//     bool shouldNotifyListeners,
-//   ) async {
-//     try {
-//       _sendCurrency = sendCurrency;
-//       if (_receiveCurrency == null) {
-//         _rate = null;
-//       } else {
-//         await _updateRangesAndEstimate(
-//           shouldNotifyListeners: false,
-//         );
-//       }
-//     } catch (e, s) {
-//       Logging.instance.log("$e\n$s", level: LogLevel.Error);
-//     }
-//     if (shouldNotifyListeners) {
-//       notifyListeners();
-//     }
-//   }
-//
-//   Future<void> updateTo(
-//     Currency receiveCurrency,
-//     bool shouldNotifyListeners,
-//   ) async {
-//     try {
-//       _receiveCurrency = receiveCurrency;
-//
-//       if (_sendCurrency == null) {
-//         _rate = null;
-//       } else {
-//         await _updateRangesAndEstimate(
-//           shouldNotifyListeners: false,
-//         );
-//       }
-//     } catch (e, s) {
-//       Logging.instance.log("$e\n$s", level: LogLevel.Error);
-//     }
-//     if (shouldNotifyListeners) {
-//       notifyListeners();
-//     }
-//   }
-//
-//   Future<void> swap(
-//       {required bool shouldNotifyListeners,}) async {
-//     final Decimal? temp = sendAmount;
-//     _sendAmount = receiveAmount;
-//     _receiveAmount = temp;
-//
-//     _minSendAmount = null;
-//     _maxSendAmount = null;
-//     _minReceiveAmount = null;
-//     _maxReceiveAmount = null;
-//
-//     final Currency? tmp = sendCurrency;
-//     _sendCurrency = receiveCurrency;
-//     _receiveCurrency = tmp;
-//
-//     await _updateRangesAndEstimate(
-//       shouldNotifyListeners: false,
-//     );
-//   }
-//
-//   //============================================================================
-//   // private state updaters
-//   //============================================================================
-//
-//   Future<void> _updateRangesAndEstimate(
-//       {required bool shouldNotifyListeners,}) async {
-//     await _updateRanges(shouldNotifyListeners: false);
-//     await _updateEstimate(shouldNotifyListeners: false);
-//     if (shouldNotifyListeners) {
-//       notifyListeners();
-//     }
-//   }
-//
-//   Future<void> _updateRanges({required bool shouldNotifyListeners,}) async {
-//     // if (exchange?.name == SimpleSwapExchange.exchangeName) {
-//     //   reversed = false;
-//     // }
-//     final _send = sendCurrency;
-//     final _receive = receiveCurrency;
-//     if (_send == null || _receive == null) {
-//       Logging.instance.log(
-//         "Tried to $runtimeType.updateRanges where ( $_send || $_receive) for: $exchange",
-//         level: LogLevel.Info,
-//       );
-//       return;
-//     }
-//     final response = await exchange.getRange(
-//       _send.ticker,
-//       _receive.ticker,
-//       exchangeRateType == ExchangeRateType.fixed,
-//     );
-//
-//     if (response.value == null) {
-//       Logging.instance.log(
-//         "Tried to $runtimeType.updateRanges for: $exchange where response: $response",
-//         level: LogLevel.Info,
-//       );
-//       return;
-//     }
-//     final responseReversed = await exchange.getRange(
-//       _receive.ticker,
-//       _send.ticker,
-//       exchangeRateType == ExchangeRateType.fixed,
-//     );
-//
-//     if (responseReversed.value == null) {
-//       Logging.instance.log(
-//         "Tried to $runtimeType.updateRanges for: $exchange where response: $responseReversed",
-//         level: LogLevel.Info,
-//       );
-//       return;
-//     }
-//
-//     final range = response.value!;
-//     final rangeReversed = responseReversed.value!;
-//
-//     _minSendAmount = range.min;
-//     _maxSendAmount = range.max;
-//     _minReceiveAmount = rangeReversed.min;
-//     _maxReceiveAmount = rangeReversed.max;
-//
-//     //todo: check if print needed
-//     // debugPrint(
-//     //     "updated range for: $exchange for $_fromTicker-$_toTicker: $range");
-//
-//     if (shouldNotifyListeners) {
-//       notifyListeners();
-//     }
-//   }
-//
-//   Future<void> _updateEstimate({
-//     required bool shouldNotifyListeners,
-//   }) async {
-//     // if (exchange?.name == SimpleSwapExchange.exchangeName) {
-//     //   reversed = false;
-//     // }
-//     final amount = reversed ? receiveAmount : sendAmount;
-//     if (sendCurrency == null ||
-//         receiveCurrency == null ||
-//         amount == null ||
-//         amount <= Decimal.zero) {
-//       Logging.instance.log(
-//         "Tried to $runtimeType.updateEstimate for: $exchange where (from: $sendCurrency || to: $receiveCurrency || amount: $amount)",
-//         level: LogLevel.Info,
-//       );
-//       return;
-//     }
-//     final response = await exchange.getEstimate(
-//       sendCurrency!.ticker,
-//       receiveCurrency!.ticker,
-//       amount,
-//       exchangeRateType == ExchangeRateType.fixed,
-//       reversed,
-//     );
-//
-//     if (response.value == null) {
-//       Logging.instance.log(
-//         "Tried to $runtimeType.updateEstimate for: $exchange where response: $response",
-//         level: LogLevel.Info,
-//       );
-//       return;
-//     }
-//
-//     final estimate = response.value!;
-//
-//     if (reversed) {
-//       _sendAmount = estimate.estimatedAmount;
-//     } else {
-//       _receiveAmount = estimate.estimatedAmount;
-//     }
-//
-//     _rate =
-//         (receiveAmount! / sendAmount!).toDecimal(scaleOnInfinitePrecision: 12);
-//
-//     //todo: check if print needed
-//     // debugPrint(
-//     //     "updated estimate for: $exchange for $fromTicker-$toTicker: $estimate");
-//
-//     if (shouldNotifyListeners) {
-//       notifyListeners();
-//     }
-//   }
-//
-//
-// }