Locally the cost for all internal parts,gears, shafts, bearrings, synchro's runs about $300-$375. Small individual parts are about $10 per pound. Where I take them its a 72 hr process. Its froze and brought back up to temp and repeated multiple times. As for rebuilding, I have 2 places local that will do all the labor for $350. They dont mind me supplying the parts needed so its more cost effective. I could see the benefits of remans if you didnt have this luxury.
The tranny I posted is going to cost roughly $675 to repair. $350 labor, $50 cryo, $200 parts and $75 for new fluid. This tranny was fully rebuilt less than 10k miles ago so not worried about syncro's, bearrings etc...needing replaced