I'd never heard of a "bullet puller" before. I'm wondering if a Leatherman or Swiss Army can opener would do something similar. I wouldn't want to try it for fear of breaking off the blade.

In the end, money is certainly better spent on one of Doug's Personal Survival Pak's ($30 on Amazon.com) and just about any knife (for compactness I like Doug's CRKT Mk5 for just $17 on Amazon.com).