As of last night they also had PSA branded SAFE/FIRE lowers for $49.99, too...
http://palmettostatearmory.com/inde...y-ar-parts/psa-blemished-safe-fire-lower.html
You can also get them with a parts kit for $79.99
http://palmettostatearmory.com/inde...lower-and-ptac-blackhawk-lower-parts-kit.html