727 trouble ?

Fluid level and color is all good, I'll have to look over the kick down linkages but all shifts are nice and crisp under light and heavy load. The car still kicks down and accelerates with no problems. Only getting the noise and slippage off the start with medium to hard acceleration in first gear. The grinding sound is kinda sounds like when your TV loses signal and you get that static sound. I guess I'll see about getting the bands adjusted first. What kind of $ can a tranny rebuild cost me if in fact thats what I'll need.

Thanks for all the replies !!!