Used bookstore buy-back/trade-in
I am a bookkeeper and I have a new client, a used bookstore, that is also a new business. They accept buy-backs/trade-ins for store credit, and I'm trying to wrap my head around how the accounting works for this, and how best to set it up in her POS (Square). It looks like she is issuing gift cards, but that does not seem quite right to me. (I just emailed the client to ask about her buy-back workflow.) Can someone walk me through how to set this up in QBO and how it should be treated in a POS?