GameStop may be making all their money from the used games market stateside, but now it seems they might have a challenger, Best Buy on the brink of entering the market too.

The giant has set up used game kioks as a trial in several stores, allowing users to trade older games for in-store credit.

Experts out of America suggest that Best Buy's move could see used game rocket to three billion USD a year - which is quite a lot, for second-hand goods.

"While we believe that Best Buy's entry into the used video game market will create a new overhang on shares of GameStop," Colin Sebastian of Lazard Capital Markets told GI.biz. "We expect Best Buy's initiative to expand the used videogame market rather than take significant share from the specialty channel."

By Luke Guttridge