an 86 astro with transmission issues, how much to replace/build unit? Worth it? on 1990 Chevrolet Astro

Can hardly find anything about the older astro's but found a broken 86 for $ hopeing to find out if it's worth it to buy the van. Cost generator wasn't helpful in the replace or rebuild transmission area. Any info would be greatly appreciated.

That year Astro uses the Turbo-Hydramatic 350 which is one of the most common transmissions in the world. Check Should not be expensive.