I did similar. I went to a nearby indie and asked if it'd be cheaper for me to buy a tire online and hire him to mount it or buy from him in a combo deal. He said he'd always beat the discounters in price / mount, but he'd charge his standard $12 to mount / balance (wheel off) if I bought elsewhere.
I now buy all my tires from him. For all I know, I ended up spending an added $.20 sometime along the line but the local guy gets the job, the job is always done well and I can afford risking the $.20.
Why be born again when you can just grow up?