I got my setup (Skunk2 coilovers w/ Tokico Blues - already assembled) by Gvtec (on TI) for $300.

I did the install myself in under 1 hour. All you basically need is a 10mm, 15mm, and some others. A torque wrench, a breaker bar (for the VERY tough rear LCA bolts), rachet, extensions, etc.

Team-Integra article on installing these things yourself