Well...wish I had better news to report. Went over there and they wanted 45 (plus tax, even with cash) just to mount the one tire...and then also tried to convince me it didn’t need balancing because it was a used tire. I was more than a little dumbstruck, calmly told the guy forget it, and left.

Ended up going over to CAME on Pacific as u/ajkd92 mentioned - paid $10 for mounting, and then went over to Costco and paid another $5 for balancing.

I will give them a call, thanks! Already have my spare on the car, so the tire that needs replacing is on a loose wheel, should make it pretty easy.

Are they still touting 5G hotspot connections for home internet use though? Because learning this makes those seem like competing goals.