I wouldn't support any "breeders" like that. Sounds like they care about cash more than the snakes they produce.
The only way I would see this being somewhat OK would be if the seller and buyer have a close relationship.

As some of you know, I'm a huge fan of Tarantulas. On most Tarantula forums, if you are selling stuff that's not ready to go. You'll be banned.

I wish more places would tighten the rules on such things. This includes show and expos. Seems like there is that crowd that cares for cash over the animals.

This hurts everyone in our hobby.