EWF, you should've been looking for them in the summer - prices and availability are usually not consumer friendly this time of year. Looks to be plenty of them around the net for sale though, for much cheaper than in years past. I'd grab one quick before the real snow hits - then everyone will be in a panic and there won't be a single one to be found under $800.
I just rebuilt my Toro 828 this past summer. I got it for free from a buddy. Stripped it down, painted, and rebuilt it from the impeller forward. I'm ready!