Think you are paying more to have the gm warranty. Charging u ~7 hours labor for a 4 hr job. Of course I'm having to redo mine at my expense since first shop can't get it right. Think most non dealers are getting $500 labor. See if u can get them to drop a hundred off the price.
2012: e85, 80mm TBody, CAI w/scoop, Solo HFC, ZL1 FP, Magnaflow TruX, Dynomax VT, Elite catch can, HP Tune, Throttle Contoller, BMR; Springs, Sways, Trailing Arms, Toe Ends, & Safety Loop, Koni str.t, Pioneer Z150bh, Phoenix Gold Sub, Hertz speakers & 5ch Amp, 1LE rear with 3.91 gears, BMR bushings, Baer Decela Rotors, Goodridge brake lines, Brembo(GM) 4 piston calipers, Hawk Ceramic pads, ported intake, Circle D 5c. 12.3@112 old setup
2017 HyperBlue ZL1 A10 on order