Hey Rams fan...that model Performer's first year was 1990. I believe that made it with the stainless tables up to 2005, then the plastic table one came along. Im guessing this one is at least a 2000 or newer. The last few years had that black top vent tab as opposed to the whiteish colored one. This one looks "like" new, and has provisions for the BBQ Guru. I don't know the price for a Guru, but I know they aren't cheap. Still...at 250 bucks asking price, you could pretty much go get a brand new Performer for 50.00 more.
I'm not sure where you live, but if you're patient for summer time, Im sure Clist will net you a nice Performer grill and a much cheaper price!