Best Buy is launching a third-party marketplace, as it tries to bulk up the variety of merchandise it offers and reverse slower sales. Starting on Tuesday, shoppers who go to Best Buy’s website and app will see products and brands that weren’t available there before, including more tech-related accessories like custom video game controllers and some nontech items including seasonal decor and sports collectibles. The company’s online marketplace riffs off those of other retailers, such as Amazon and Walmart, by relying on third-party sellers to stock, sell and ship inventory and taking a cut of their sales in the form of a commission. “Everything we do is really centered around the customer and their technology needs, and we do see customers actually doing a lot of consumer electronics transactions through marketplaces,” Chief Customer, Product and Fulfillment Officer Jason Bonfig said. “And as a result of that, we need to make…
