You're not being attacked...
I myself built my coil kit for far less than other places are selling theirs for...cost was a major issue for me. With a little know how and a little time and knowing where to get certain parts, this conversion can be done for under $250.
To the OP, I sent you an email.
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04 TiGray RX8 MT, LS2 coil setup, 3" midpipe, HKS Hi-power 3" exhaust, TEIN S-Techs, Hotchkis Adj F/R sways, K&N Typhoon V2, Steel braided brake lines, Redline drivetrain fluids, ATE Super Blue brake fluid, Cobalt XR2/GTS brake combo, MB Motorpsorts Weapons 18x9 +45 offset, 275/35's