Best ones I have ever seen ar available from
[email protected]. He was selling the last couple for $119+shipping. The reason the are so good is all you need to do is drill holes and tap the buffer. The magwell was broached to spec and there is no milling required, the top and rear deck are cut to spec and perpendicular to each other and yes, they are forged too. Throw one of these in CNCGunsmithings jig and the whole process is a piece of cake.
It is WELL WORTH the extra money to get a good forging, you will easily save yourself many hours of filing, sanding and cursing. If you are looking to get an 80% lower because you think they are cheaper, move on and get one of the stripped lowers on the EE for $89 shipped. The tooling alone for an 80% will run you $200 or so not to mention anodizing and coating. Nothing like playing with battery acid on a weekend!
Do a web search for the "builders squad" and it is about the best page I found.