I purchased a Bushmaster complete lower receiver minus the buttstock from eaglefirearms.net for $209, and that included shipping. I'm not sure if they offer it anymore though. To be honest, the lower receiver doesn't matter as much as far as the company you buy it from. You can get a very high quality lower made by Stag Arms from eaglefirearms for around $140. And even if you want an all Bushmaster gun, check out Bushmaster's website. If you buy the upper and lower seperately, it's about $200 cheaper, and it's the exact same gun. But by the time you have them shipped, and then pay the FFL transfer, the price difference is negated. A great place to look for good AR deals is the AR15.com equipment exchange. Good luck