They may still be on back order, so it may be who ever has a set in stock. Jegs and summit usally has good prices on them, I have heard of people mention a few local speed shops who can get them.
93 T/A l 398" l 24X SD Tuned l M6 l 12 Bolt 3.90 l Fikses
07 C6 Z51 M6 - Full Bolt Ons l TSP228R l A&A T-Trim Kit 4" Pulley 655RWHP/579RWTQ.
12 Ford F150 S-Crew Lariat 5.0