I just got a price quote from Ben@ARMA of $8800, plus 20% off, so $7040. Shipping is $600.
That's for the Stage 3 supercharger for the 330i, which includes the supercharger kit, stander, bleed valve, oil injection, ecu, intercooler, and other accessories.
Optional items are apparently the header LHD for $1320 and an exhaust which includes a variable exhaust vacuum valve for $1800.
Currently for sale: N/A