Order them online. Find one near you that’ll do a transfer reasonably priced. Primary Arms usually has Anderson lowers about as cheap as you’ll find them
Sign up for Primary Arms http://www.primaryarms.com/
If you're willing to wait you can get some great deals. If you know what you want, and how much you're willing to spend, buy it AS SOON as you get the email.
I recently got a closed ear Anderson for $30.