i got my skunk2's for $300 at my local shop. don't skimp out on some cheaper ones, save for a couple more days and get the ground controls or skunk2's for $300.
the skunk2's are really stiff, so you may want to go with the ground controls and order a lower custom spring rate. and i think main difference between the two is that the skunk2's use dual locking perches to secure the spring height while the ground controls use a single perch.
hope this helps, good luck.