Looking for a POS+eCommerce solution with Trade-Ins, no options available?

Hi all, I am looking for an POS+eCommerce solution thats supports trade-ins (buy and sell) and localization. I've looked at MageStore, and apperently it's a really unreliable product. Shopify doesn't do trade-ins nor do all POS I've seen. Does anyone here know of a cloud based POS+eCommerce solution that supports Trade-ins?