There is something wrong with that bike. The 1992 and 94 RB-Ts did not come with a unicrown fork. This looks to be a 91 RB-T which also came with a fork crown:
http://www.bikeforums.net/classic-vi...air-price.html
While I'd pass on this bike which has been heavily kludged (and quite possibly crashed), I agree with @
daf1009 that quality used bridgestones are hard to come by and if you find one in your size it might be worth "overpaying" if you really want the bike. There is a limited supply of them and they make excellent riders. My 1993 RB-1 and my 1993 XO-2 are two of my favorite riders; and my 1992 BB-1 is a great winter bike.