Eh, a stripped lower still has a FFL fee.
You can usually get a complete lower with brace/grip for <75 at a local store and not pay the FFL.
Ends up being close to the same price, but you get a lot more.
They've had good deals on 300 BLK uppers recently, but I know if I do that I'll regret not getting one of the 300 AUGs instead.
But one of PSA's uppers and a local complete lower is a damn good deal.