Can you sell unwanted stuff here?

You'd have to buy a stall/booth.

You can have two garage sale days a year here at Mesa Market Place! Our Leasing Agenta, Melissa & Monica will answer your questions about having a garage sale here! They are in the office Fridays, Saturdays and Sundays. You can also call them at 480-380-5572 Fridays, Saturdays, and Sundays. Thank you so much for your query!

I believe you can sell whatever you want as long as you rent a booth

Have to py for a booth

If you pay for a booth I'm thinking!