you can find NB in sporting goods stores like dicks (don't know if they have them where you are). they range from 40's-50's to well over $100. but they are a good invesment. i would advise you go to a locally owned shoe store so they can actually fit you for a pair and maybe make other suggestions. there are lots of good shoes out there - birks, born, ecco. someone mentioned crocs (those are only like 30 bucks, but man do they feel good).

once you get a fit, if you don't like the price, try online at zappos.com.