Great idea but the app frequently won't take more than 4 items and then kicks items out when you merge trades making it very difficult to meet minimum selling requirements. The explanations of dynamic pricing and only so many of a certain type/category of item in one trade aren't credible. If an item is accepted for one trade it shouldn't matter what other items are in the trade and dynamic pricing - well, it's just not credible that acceptability can very by the minute when, once a trade is completed, price holds for several days. However, would still use again as seem to pay better prices than some competitors but frustrating to have to do multiple trades and not just all in one.