Give people notice if an item is part of a final sale & might not be refunded unless it's faulty. This will actually allow the customer to rethink the purchase.
Kristine Taylor commented
This is already done. Some items will just say 'sale' & others 'final sale'.
Beth James Waters commented
They do have this in the item description but perhaps they should put a flag on them at the che lout or something so it's more obv