11 stores where you'll probably never buy anything on sale

"While there are always discounts on a few items at Whole Foods, if you've got a specific grocery list you will most likely always pay top dollar," Corrine Stokoe, owner of deal blog Mint Arrow, told Business Insider.

If you're set on getting around this, at least a little bit, having a membership to Amazon Prime will help get discounts on a wider selection of items, although some customers have reported problems with the program.

MAC Cosmetics are "almost always excluded from big retailers' sitewide discounts and they basically never offer their own sitewide discounts," Stokoe said. "So go ahead and just cough up $18.50 for your lip gloss — no reason to hold your breath for a deal."

Luxury brands don't like to be associated with discounts, but many big name brands do have outlet stores.

"Competitors like Gucci and Celine have outlet stores, but Louis Vuitton never goes on sale and does not have an outlet store," Sykes said.

So if you're eyeing one of their designs — especially when it comes to limited edition accessories — buy swiftly as they often quickly sell out. Also, remember that any department store that carries Louis Vuitton will, almost certainly, exclude the brand on their storewide sales.

"The ultimate status symbol never goes on sale," Sykes said. In fact, not only does it not go on sale, many of their handbags have long — we're talking years — waitlists.

Read more: How the Dumas family, heirs to the $49.2 billion Hermès fortune, turned a leather store into a luxury empire and became one of the wealthiest families in the world

If you're crossing your fingers for a Black Friday deal — or any discount — on a brand new Chanel bag, you might want to change your dream.

"Although the Chanel quilted flap bag is deemed a smarter investment than a piece of real estate because of its ever-increasing value, it's not smart to wait for a sale," Stokoe said.

Read more: I visited the Chanel store in SoHo the day after Karl Lagerfeld died, and it was clear why the brand has been an icon for nearly 100 years

"These bags only go up in price every few years and unless you're going to buy used, they're never a deal," she said. "Even then, you'll pay a premium for true vintage Chanel bag."

Discount stores don't typically discount.

"Dollar stores and discount stores … don't discount because if you're paying a dollar for something, it's not really possible to pay much less," Bodge said.

Like Louis Vuitton, Tiffany & Co. is one of those luxury brands that not only never goes on sale, they don't have any outlet stores either. If you're eyeing something, it's better to purchase sooner rather than later as their prices also tend to go up on their signature items.

"Tacky red sale stickers just don't appear here," Sandberg said.

While duty-free stores typically run promotions for buying multiple of the same item, who really wants to carry four bottles of vodka or two huge Toblerones on an airplane?

"For the most part, whether it's cosmetics, sunglasses, handbags, food, or booze, the price tag already reflects the tax advantaged discount, and there aren't more discounts to be had," Sandberg said.

"There may have been a recent price drop on Models X and S, but in general, Teslas are sold at list price with no end-of-year or seasonal discounts," Sykes said.

Storewide sales at Sephora are all too rare, according to Sandberg.

That said, Sephora does offer value sets, especially around the holidays, but most are limited edition and sell out quickly. Plus, they already have built-in discounts, so you're not likely to get them for lower.

If you're really hungry for a deal, you can sign up for the Sephora rewards program.