Joe,
Not a problem. You can transfer DNF bucks at
http://dnforum.com/store.php
Thecostprice.com still comes up as unregistered when I check, but then whois sometimes takes a while to update.
There are lots of different ways to get long lists. One is to just take root words and switch prefixes and things around (copying and pasting) and then doing a multiple name check on them, like at snapnames.com. You can also use one of the "suggest similar names" options that many registrars (GoDaddy, for one) have. Some places (DotRegistrar.com, for example) also allow you to run searches on available names by typing in a word and then having it check each combination with a set of common (or not so common) prefixes or suffixes.
Cost and price are roughly similar words, and both together doesn't sound like something I've run across in the U.S.