Jay Jay is a good guy. You can always trust him on the CC store.
Otherwise I've bought from a lot of sites... weaksauce, JHPUSA, robearracing, eBay (gotta be very careful with sellers on this one), Honda-Tech classifieds, ClubCivic classifieds, jdmland... I know I'm missing some but I can't remember since it's been years since I've actually bought a new aftermarket part for my car.
I've bought from jhpusa, jdmland, amazon, eBay, pw:jdm, NLmotoring, and meng motorsports all with no problems. Just check the sellers rating on eBay before you buy. And I try to avoid passwordJDM because of their prices