Today, Coles is launching one of their biggest Best Buys promotions to date and featuring a wildly popular design dupe.

The supermarket has also advised shoppers on how to get an extra 15 per cent off due to a sneaky Black Friday "hack".

Coles is launching a 5L $89.99 stand mixer that bears a striking resemblance to the popular KitchenAid mixers, which retail between $699 and $899.

The Thomson mixer being sold at coles comes in black and red, features 5-speed settings with pulse function, a stainless steel bowl, a transparent bowl cover with refill opening and an automatic stop when the head is lifted.

Coles General Manager for Health and Home, Jonathan Torr, shared a discount "hack" for savvy shoppers to take advantage of during the Black Friday sales.

"For an extra special offer, we're giving customers 15 per cent off a range of gift cards – this is our biggest gift card offer yet and a true hack for shoppers who want to save even more at over 90 major retailers across the country," he revealed.

"If you're already saving 50 per cent at one retailer, you can save an extra 15 per cent by using the gift card you buy at Coles from today."

Coles shoppers are able to get the discounted gift cards between now and December 1st.

Torr described today's Best Buys Bonanza sale as "the biggest and best sale we've ever had".

"We've taken inspiration from leading kitchen and sporting brands from across the globe and sourced similar products for fraction of the price for our customers," he said of the designer dupes on offer.

"We've worked hard to ensure that the products we're offering are not only the best value on the market but are also fantastic quality. "

"We're excited to expand Best Buys to more stores and have an exclusive range available only on Coles Online too, which means our amazing deals will be available to even more customers all around Australia," Torr said.