The cheapest days to buy certain items

Thanks to online coupons, price-comparison search engines and reward memberships, savvy shoppers can pay less than full price on any day that ends in "y." But depending on what you're planning to buy, some days of the week may yield better bargains than others.

Here are a couple of examples:

Airplane Tickets
When to Buy: Wednesday morning.
Why: "Most airfare sales are thrown out there on the weekend," says travel expert Peter Greenberg, a.k.a. The Travel Detective. Other airlines then jump into the game, discounting their own fares and prompting further changes by the first airline. The fares reach their lowest prices late Tuesday or early Wednesday.

Gas
When to Buy: Thursday, before 10 a.m.
Why: The price of oil isn't the only factor influencing costs at your local pump. Consumer usage plays a role, too — and weekend demand is high, says Jason Toews, co-founder of GasBuddy.com, a price-monitoring site. Prices usually swing upward on Thursdays as travelers fuel up to head out the following day. By hitting the pump before 10 a.m. (when many station owners change their prices), you'll beat the rush and the price jump.

The whole list

via