It looks to be in very nice condition. "Good deal" depends on the price.
Buy it and begin the (never-ending) wonderful journey...also, scour Craigslist for a Gold, which are often available for 1/3-1/2 retail.
PS- to determine size, check the lid vent position. If it is mounted "outside" the lid handle, i.e. at the handle end, it's a 22.5. If mounted "inside" the handle ends, it's an 18.5.