Did they list everything that was done for the $100 that wasn't tires? Looks to me like they put tires on it, and gave it back to you? Did they rebuild both wheel hubs, headset, and the bottom bracket? Way too much is relative, I've had some tickets that were hovering close to $400 when I was wrenching up to a month or so ago.

I mean to say I see grit around the bottom bracket spindle, and that and the wheel hubs are THE most important things to do to a bike that has been sitting. That would be about $15 or so each, depending on the shop. Without the bearings being redone, it may only a last a month or two before it needs new wheels and and a full bottom bracket assembly. (pedal bearings) It also looks like they didn't even bother cleaning other than rinsing it off with a hose possibly. The chain is filthy, and shows no sign of being lubed as well, and the front tire is on backwards..,,,,BD