sure, so long as you know that it works ok, than i would say go for it.. i am a lil leary buying used electronics though.. a few years ago i bought my nephew a used play station, and the first one didn't work, the second one i bought didn't have all the right parts, and i think finally the last one worked.. i ended up paying what i would have if i would have just bought it new from the beginning..
just do your due dillegance and make sure its all good before you lay over your hard earned cash, bargain or not...