After 40 years of EBG, I finally took the plunge. I play in a jump blues band and my bandmates had been nudging me to get an DB. I stumbled onto an old Kay ("Kay Bass Viol" Model M-3, Serial # 55467, says the sticker) 1/2 size, laminated instrument. It is in very good shape BUT it lacks a soundpost and needs new strings and a bag (not to mention a pickup). The bag and strings don't worry me but the soundpost, to my untrained eye, looks like it could be a problem but not a serious or expensive problem. Can somebody give me some idea what I should expect to pay to have a soundpost installed? Is it something I should consider doing myself considering that I have been playing and working on electrics for 40 years? Otherwise, the bass is in what I would call very good condition. I paid $300, which appeared to be stupid cheap even considering the repair. Did I get fleeced or am I the shrewd buyer I like to think I am?