Found it.
This is what Brett said about pricing a while back, prices may change though.
At the moment the kit is planned to be offered as two versions, a tuner version and a ready-to-run version. The tuner version includes everything in the kit except fuel system: injectors, Maf, spark plugs, fuel pump, and programmer. That kit will be listed at $5,800. The ready-to-run kit will include everything to install the kit and get it running. The tune will already be in the programmer, so all that is needed is to install everything out of the box and you are off and running. The ready-to-run kit is planned to be priced at $6,800. If customer already has a programmer then the programmer price will be subtracted, but tuner will need to be shipped to us, so that tune can be installed.