Cost for 727?

What do you guys think I can expect to pay for a 727 core and a decent rebuild? The 383 should make around 400 horse and I would guess around 440 foot pounds or so. I just want the tranny to shift a little firmer than stock and will probably go with around a 2400-2600 stall convertor. Cores around here will probably fetch around 50-75 bucks or so but I dont know what I should expect for a rebuild. Thanks!