So I bought a set of brand new air at tournament balls about 10 years ago. I took them with me to the pool hall for about two weeks. Then I got tired of lugging them around and they’ve been in my closet all this time. While they have been in my closet, they turned yellow, but they are in mint/like new condition. They have zero wear on them as they were hardly used. The yellowing has not affect the gloss or coating on the balls at all. I guess this just happens overtime. They have been sitting in a box in my closet for a decade. The balls are pictured next to the balls at my local pool hall so you can see the yellowing. My balls are in much better condition than the white ones from the pool hall. $275 PayPal. FNF or business transaction you pay the fees.