For store credit, you get mixed responses. In my area, Globalfishco and Undergroundaquaticz give very fair deals. Predatoryfins seems to be more about moving quantity so I don't think they're able to swing good store credit. It's a win win for stores to give good store credit for quality fish. You build good rapport w your local hobbyist. You get good quality fish and end up moving fish at the retail price anyway. The person giving in the fish for store credit is going to buy off of you fish that you bought at wholesale prices.