Years ago, when I was broke, a guy I knew found a a Yamaha TRB 6-string made of some fancy, exotic wood for about €100,-
He asked me for advice, 'cos he had no idea about such things.
Had I not been broke and/or had it been a 5-string, I would have snapped it up.
Instead, we flogged it for about €900,- (it needed some serious TLC) and split the money.