How can I effectively track customer sales in retail toy business?

[thetoyjunglefl]

Hello,  I run a retail toy store with a brick and mortar location.  We are starting to buy vintage/collectible toys to resale.   Looking for the best way to run a translation through our POS at the store for these transactions (if there is a way).  

EX.  A customer has a certain toy they want to sell us.  We offer cash for the toy to the customer then resale it.  I'm thinking some sort of "paid out" that we can keep track of easier.

Thanks for any help or suggestions.  I'm kinda at a loss

[Tern-Eco]

The Tern Trade-in app is available in the Shopify app store currently and supports online trade-in. We're also currently looking at requirements for an in-store version. Would be great to chat if you're still looking for an in-store solution?

[Justin267]

We're also looking for this solution to buy old gold from a customer.

[anchormansam]

Did you ever find something that would work for this, for in store?