I'm hesitant to post this because I don't want to let the riff-raff in on one of my best kept secrets. But then again, I like to share the love...
Runner Runner Guns (based out of Texas) is currently selling several different styles of stripped billet lowers for $89.99:
https://www.runnerrunnerguns.com/produc ... let-st.htmThey have both engraved and laser engraved.
They also have an 80% lower for $30:
https://www.runnerrunnerguns.com/produc ... aw-fgd.htmDisclaimer: I haven't actually put together one of their lowers yet, but I have a couple of their uppers and am very impressed!
EDIT: Bonus! No shipping charge either! I'll let you know how they turn out...