It sounds like fun.
Buy a bunch of cases of the latest baseball card product, grab a friend or two if you can, and rip, rip, rip. The more you buy, the better cards you pull and, if you're so inclined, the better chance you have of 'flipping' them for a profit.
First, there's the amount of work. Buying multiple cases, opening packs, sorting, listing and shipping (assuming you can sell most everything) is a time consuming endeavor. Still, there are plenty of younger folks out there with time on their hands, ready to spend entire days trying to turn those unopened cases into cold, hard cash.
Case breaking has become a big deal lately, as word spreads of profits made on products like 2011 Topps Gypsy Queen, which turned into a surprise hit. Many did well with 2012 Topps base Series One. However, those results aren't an accurate picture of the market.
Topps and the other card makers are in business to make a profit and that doesn't always translate to a secondary market that's profitable.
One online dealer who has taken on more cases that he cares to count says the profit margins are extremely small and with 2012 Topps Update, there may not be any profit at all. Read his first person account of the product--and the current market for case breakers here.