Is this a good/bad/ok price?

NTB (National Tire & Battery)
2 Front: Michelin Pilot Sport A/S 225/40ZR-18 88Y DIR $232. ea
2 Rear: Michelin Pilot Sport A/S 255/35ZR-19 92Y DIR $289. ea

Total installed, after shop/disposal fees & after taxes is $1,260.

My regular mechanic/service center wants $1,592.

Firestone wants $1,426.

The Chrysler dealer I'm not even going to bother with.