Regardless of what anyone says.... eBay FTW! C8 20 way adjustable Coilovers $550, Skunk2 Front camber kit -$58.00 (used), Blox rear camber kit - $80, Blox Rear LCA - $100, Front strut bar - $25. Suspension basically done and bought for a total of $800.
I have bought everything from eBay... or Craigslist. But what's not on CL in my area, I go to eBay immediately.

As many have stated, please know who you are dealing with on eBay and where the item is coming from. I always use Paypal as you can fight charges if anything goes wrong.

here are some good sites i like that you probably already heard of
www.passwordjdm.com
www.andysautosport.com
www.jdmcarboy.com
www.procivic.com
www.cxracing.com
and www.slickcar.com