Return fuel system install cost?

G3RSTY7

Couldn't find a sub section for fuel delivery. Do we know what the average shop time/install cost is for a return fuel system with ethanol sensor and wideband? I brought my supercharger kit to a shop he quoted me $1500-$2000 on the high end to install the rest of the blower, fuel system and oil cooler. I hadn't heard anything for a while then when I finally hear from the mechanic days later he tells me we're way overbudget currently at about $3200 and we haven't even started up the car yet.. how pissed should I be? Definitely concerned if I'm already at $3200 and we haven't even found out if the install was even done right. Chaps me more I wanted to do it myself so if anything goes wrong I'll be better to troubleshoot it but wanted to have my car done in time for a show--which didn't happen...

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09 G37S RWD 6MT, Topgunz Supercharger, CJM RFS, Walbro 450, 1050x, Nismo 1.5way LSD, Ecutek FF tuned by Seb IG: G3RSTY7 MyG37.com: RickyBobby