Where can you get the best return or money back on empty printer ink cartridges.

Refill them as many times as you can.  You'll save way more money.
orksecurity7 years ago
Can't vouch for "best", since I haven't tried everywhere in the world. I think Staples is offering a $3 store credit, and I doubt you're going to do much better than that -- they really aren't worth much, so the stores are undoubtedly budgeting this as an advertising expense.