Our diaper pail is just a kitchen trash pail that has a lid. We also use the Mother Of Eden pail liner that gets tossed in the wash with the diaper load. I like to check the Sales and Announcements link at www.diaperpin.com to get the best deal on accessories. The wipes we use are just cheap washcloths from Target.
If you have a Wal-Mart near you, I know that you can get wet bags (in both diaper bag tote size and pail liner size) in the camping section, cheap washclothes and a kitchen trash bin to use as a pail.
Kelly