If you sell on a marketplace whose currency differs from your bank's, you have probably tried to compute, per order, how much you will actually be paid — and found that the numbers never tie out. Here is why, and the reconciliation approach that does tie out to the cent. There is no per-order exchange rate. By design. The SP-API does not expose a per-order FX rate anywhere, and it is not an oversight: Orders API (getOrders/getOrder): amounts in the marketplace currency only....