Plastic clamshell packaging is the bane of any gadget-lover's existence. It makes actually getting at your goodies just so danged hard. They exist to prevent theft, but they're near impenetrable even after you've legitimately made a purchase.
The ZIPIt is a battery-operated device designed to tear through those infernal cases like a hot knife through butter. Sure, it's probably overkill to drop $25 on a product designed to open other products, but this is America! You can spend your money on any stupid crap you want.