That's kind of crazy money, but indicative of the market. I got really lucky on the MoFi Sinatra box ($175) and the Beatles ($300), so I'm still holding out for a good deal on the Stones.
I suggest looking for one that doesn't have a perfect box and has been played once or twice. The collectors tend to go for the pristine ones and want nothing to do with anything that's got a few blemishes. For me, as long as the vinyl sounds good, that's all I care about.
Don't know if I'll get as lucky with the Stones, but staying hopeful!