Or craigslist.
Those older Peavey amps can be a good deal for what they are: big, heavy, loud, reliable...so-so tone.
I've owned several of them in the past (Mace, Deuce, VTM 120, Classic 75, Audition, Express 112, Backstage and a couple others) and they all served me well while I owned them.
My Peavey Delta Blues 210 is still my main gigging amp and the new Eminence speakers really give it new character and tone.