This place always does a great job for me and the prices are very reasonable. I have to order pants in tall lengths as regular length is too short...but then they are just slightly too long! So I don't feel like spending a lot just to have them altered half an inch or an inch yet it really does make all the difference. The last pair of jeans he hemmed for me cost $8.95. I consider that a bargain for perfect length pants and I'm just not talented enough to hem them myself.
I know their sign says 15 minute hems but they usually ask if I can come back the next day and I say yes because I don't mind. That said, I might ask about the 15 minute thing next time instead of going back. I imagine it's one of those things where you have to ask otherwise they aren't going to do it because (logistically) they can't do it for everyone.