I bought a 26" inner tube. You'd think that would be easy, but I asked for a road bike sized tube, and the guy at the counter starts telling me they come in all sizes. So I told him I'm using a Gatorskin, which in 26" size only comes in one width, 25, but no, he says that there a different sizes. He finally looks it up, and sees that 26" gatorskins are only one size, and they take the narrowest tubes. 1.0, 1.2 1.5, he starts looking them up. Ultimately he goes to the back to get it, and only had one in stock 26x1.1 - 1.5. Which is all I wanted in the first place. He further tells me that they only had Michelin because they are the only ones that make that size, and when I think about it, that's all I ever end up getting at the other shops.
So why tell this story? It took so long to get this one damn tube, that I ended up getting a parking ticket! What I thought would be a 2 minute stop took 15. Argghhh.