Lots of competition out there in the 3.5-4k range and you have something a little out of the ordinary. It's still a tuner kit, like it or not, and that hits value hard. I'd give 4k for blower kit alone if the dollar in the country I'm at wasn't so bollocked right now.
2014 Premium GT, SGM, Brembo, Auto, Tech, Comfort, etc. GT500s, Steeda UCA, VMP auto tune, 100 shot on BBR tune, best et: 11.38 at 120.85
2012 GT, Candy Red, Brembo, 3.73, Tech, Comfort, etc. Procal tune, Roush upper, UMI LCAs, Steeda red bracket, GT500s, 28X10X16 Hoosier slicks, best et: 11.91 at 115.23 RIP