When's the best time to buy stuff?

Most people I know love bargains. Thus, the following article on "The Best Time to Buy Everything" might be of use. Some highlights:

Airplane Tickets
When to buy: On a Wednesday, 21 days (or a couple of days earlier) before your flight.
Why: Airlines make major pricing changes (and run fare sales) every week, typically on Tuesday evenings and Wednesday mornings. About 21 days out from your flight, you'll see plenty of deals out there as airlines scramble to fill seats. Don't wait much longer, she cautions; prices jump significantly from 14 to seven days ahead of departure.

Cars
When to buy: Weekday mornings in September.
Why: By September, all the next year's models have arrived at the lot, and dealers are desperate to get rid of the current year's leftovers, says Phil Reed, consumer advice editor for Edmunds.com. It's the prime time of year for incentives and sales, not to mention bargaining. "Any car that's been on the lot for a long time loses its value in the eyes of the car salesman," he says.

Heading to the dealership on a weekday morning also helps because there's low foot traffic, meaning you'll have ample time to negotiate and fewer people trying to buy the same car. The more demand, the less willing a salesman is to go down on price, says Reed. (For more, see our column Summer Car Savings.)

Clothing
When to buy: Thursday evenings, six to eight weeks after an item arrives in stores.
Why: After an item lingers in stores a month or more, retailers start dropping its price to get it out the door, says Kathryn Finney, author of "How to Be a Budget Fashionista." These season-end clearances tend to be the same month that designers host fashion weeks (February and September) to preview the next fall or spring collections. So smart buyers can check the catwalk to see if any of this season's trends — say, leggings or military-style jackets — will still be hot next year, and then scoop them up on clearance.

Hitting the mall on a weekday ensures you'll get a good selection. "On the weekend, you'll only get picked-over stuff because the stores don't have time to restock," she says. By Thursday, most of the weekend sales have begun, but everything available is on the floor.

Computers and electronics
When to buy: Just after a new model is launched.
Why: When the latest and greatest of a product is released, you'll often see prices drop on what had previously been the best thing out there, says Tom Merritt, executive editor for CNET, an electronics review web site. Case in point: When Apple released the Nano last September, prices for the now-discontinued Mini dropped 12%, from $199 for a 4GB to about $175. So keep your eyes open for announcements from major manufacturers. Want a little less work? Time your purchases for after big annual technology show like MacWorld (next held Jan. 8-12, 2007) and the International Consumer Electronics Show (next held Jan. 8-11, 2007).

Gas
When to buy: Early morning or late evening on a weekday.
Why: Time your trip based on whether prices are rising or falling, advises Marshall Brain, founder of HowStuffWorks, a consumer guide. Gas stations tend to change their prices between 10 a.m. and noon, so hit the pump in the early morning if gas prices are on the rise. Go later in the day if prices are falling. Tipsters on GasPriceWatch.com reported that on Sept. 3, a WaWa gas station in Lanoka Harbor, N.J., was offering regular gas for $2.85 a gallon. One day later the station's price had dropped to $2.65. In that case, going early would have cost you 20 cents more per gallon.

Try not to buy gas on the weekends, Brain says. Gas prices are often slightly elevated, as stations try to profit from leisure travelers. (For more ways to save, see our column Save on Gas.)

Groceries
When to buy: Sunday evenings.
Why: Store sales tend to run Wednesday through Tuesday, says Teri Gault, founder of The Grocery Game, a consumer savings program. On Sunday, you'll also have the latest round of manufacturer's coupons from your morning paper. "You can maximize your coupons available for that shopping week," she says. Heading to the store close to closing time means you'll have access to sales on fresh items that must be sold by the end of the day, such as meats and baked goods.

Of course, you'll also benefit from in-season items that can be frozen for use later in the year, says Gault. That means turkeys at Thanksgiving and hams at Christmas and Easter. During the spring and summer, buy fresh produce. Peaches bought at $1 per pound now can be kept frozen for smoothies and pies throughout the winter, she says.