Best Buy is one of the biggest retail sources for laptops, and August is one of the best months to look for a deal. With back to school season in full swing, the retailer routinely knocks hundreds of dollars off popular models, making this a prime window to upgrade a laptop that seen better days. The catch is separating genuine bargains from discounts that look bigger than they really are, which is where a little homework comes in handy before hitting the buy button. A laptop marked down by 10%...
