Just call Shelly and Dennis at First Defense Firearms. I ordered mine over the phone and had it on my doorstep 2 days later. Awesome folks to deal with. They've got a great following here too. linky
Happened to be on the phone with Shelly from First Defense tonight, and she confirmed they have DPMS LPKs in stock @ $89.99. It's a markup for sure, but not as bad as I've seen elsewhere.