Timing and planning ahead can save you money. Even better, is a reference so you CAN time and plan ahead. Take a look over at Lifehacker for a great reference, chart, and explanation:
Good things, and better prices, come to those who wait. Buy your furniture now, laptops in April, appliances in September, and make other better-timed purchases with our buying guide, and you’ll save a few bucks with off-season, inventory-moving prices.