$112 for a stripped lower of dubious quality?  LMT lowers were going for $90 a few months ago.  (They only had two left by the time I escaped the estrogen laced prison of my house and got to the gun show, so i bought them.)  Here, in backwater, NC, land of Del Ton Industries perversion.  Sure, prices can be regional, and the lower is what some consider a low stress component.  But in many ways, you get what you pay for.  Or rather, you can buy a brand new, if basic, AR pattern rifle, true to MIL-SPEC, for about $900.  Buying cheap doesn't necessarily mean buying shit.
But money's always an issue, I know.  If you're looking for a safe/range queen, or something to build with less worry about screwing anything up, then I can see it.  I guess.  You can always swap parts later.
Maybe I'm just of the 'buy quality, buy once' kind of mindset.