Hi there,if you're are looking for a 1st generation Model T,(the silver faced one,not the one with red knobs),it is a totally different amp than the Fender/Sunn "reissue".The Fender model is called a 300 T I believe.The 1st,2nd(red knob)generations and the 300 T are all different.
As far as cost,I sold my 70's near mint Model T for $1700.00 CDN.plus shipping,hated to but had to.They are hard to find,anyone that has one really doesn't want to get rid of it.Good luck,Mel.