I can't even begin to wonder why you would compare a tire store air bag price to an online price. I'm not the sharpest knife in the drawer, but even I know better than that.
Les Schwab here is AWESOME. I can relate at least a half dozen experiences where they saved my bacon, usually with no charge, even when the products they serviced weren't purchased there. Fast, prompt service with a smile every time. Yeah, they're proud of their products, no doubt. Well worth it in my opinion.
I haven't seen a tire dealer NOT use a torque wrench in probably 10 years.
And I'm not affiliated in any way with anybody involved with a Les Schwab.
The advantage of inside the coil bags are they are cheaper and easier to install. The disadvantage is they support less weight and are more fragile.