go to www.summitracing.com good prices quick delivery.
tachs really dont loose there value,you can get a used one for just as much as
one that is brand new.also KRAGEN has pretty cheap autometer tachs right now they dropped in price from like $240 to like $180 or something along those lines. good luck.
oh and stay away from cheap tachs,they are usually off.stick with name brand shit.