Most of the better built knives do end up costing a bit more. So it really depends more on your budget. What I'd suggest you do is go to a couple of the big knife shops online, have a look at their balisong/butterfly knives in your price range. Once you've got a few that you like, ask for opinions here or do a search for reviews on their quality, craftsmanship and longevity.

For the record, their's no reason you can't pick up one of the $10 cheapies, grind down the sharp edge and learn the techniques and have some fun without cutting your fingers up.