You should only pay 600.

i bought my GCs from groupbuycenter.com from protege5 online. i got the limited edition[no custom spring rates] for 295shipped. they havent arrived yet so i cant tell you how their service is
you can also get custom rates for like 30 bucks more

i got my AGXs for 338 shipped. it cost me 38 for shipping because im in Hawaii. the guy i bought em from sells em for 300shipped in the cont. US. let me know if youre interested. you can also check out SHOX.com. they dont advertise prices because theyre to low but i never bothered to get a quote.