Originally Posted by operator
Or you can buy one that doesn't feel like it'll break and use that.
Kind of true, but not entirely. Unfortunately the seals in expensive pumps ($40+) don't seem to last any longer than in the cheap ones. Here's some *indirect* evidence. The pumps are sorted by price. If more expensive pumps are better, you'd expect to see lots of long bars at the top and shorter ones at the bottom. I don't see that trend:
http://www.mtbr.com/reviews/pump/index_byprice.shtml
Here it is sorted by rating. Most of the top-rated pump retail for under $30, which means you can probably find them online for $20 or so.
http://www.mtbr.com/reviews/pump/index_byrating.shtml
Anyway, most of the pumps that are specifically meant for bicycles will do the job. Stay away from anything from the auto parts store. Those things don't usually pump more than 60 or 80 PSI.