re: Palmetto State with the $29.99 Stealth Lowers...

Yeah, the problem there is the transfer fees.

I mentioned Bayou Pawn and their deal with PSA (order through them, and they will buy/sell it to you for same price, but only everyday price- not deal of the day).
They also used to do a transfer for full on the first, and less for each extra firearm. Which local to BR, is the best price I could find.
Primary had the same $30 deal on Anderson lowers, and I got 3 sent there. I did the math, and it was slightly cheaper than the PSA prices. They did it, but the next time I went by, they had a sign up saying full transfer price for each lower.

I think the set price is going to be $50-$60 for a lower. I got an Anderson from Bass Pro for $60ish out the door.

*I learned about the discounted transfer price at Bayou doing an auction purchase through them; I got a pair of Astra 400's and an A100. I think it was $60 for total transfer, which tacked on to my total auction cost wasn't terrible.