2 years i think? i was using it last weekend. caught the one you saw on it in fact. the newer models have internal and external magnetic brake systems. the older one i'm talking about only has the external. i think this all you need for pitching since you don't want to set a lot of brakes anyways. i've also used it for froggin. 7.1:1 gear ratio. i think this is the only difference in models. same components, specs, and same 20 lbs. of drag. it's a work horse reel.
no idea what it would retail for but the models from last year go for like $160 or $150. i'd say asking $75 for it might even be a stretch.
http://www.tacklewarehouse.com/Abu_Garcia_REVO_STX_Casting_Reel/descpage-AGRSTX.html