Regal/Tunerworks more then likely included a wheel alignment. Which would add to the cost and you will know that it gets done right.
They did my spring install and I did not think the cost was out of line with what I have seen other places.
2011 E92 M3 | JEREZ BLACK | EXTENDED BAMBOO NOVILLO | EXECUTIVE PKG | M-DRIVE | EDC | M-DCT
MODS | KW S/O | HRE P40SC | Akra Evo |ESS Akra Tune | BMC drop in | StopTech Trophies | TMS Pulley | LUX V3