If anyone is in the NYC area there's a huge store called Bingers Bargain Bins that stocks returns and overstocked items from Amazon and other retailers. They have a cool model: on Fridays inventory gets restocked and all items are $7, and the price goes down by $1 each day until everything is $1 on Tuesdays (store is closed Wed & Thu).
Those TikTok videos are usually produced or at least approved by the marketing and recruiting arms of those companies, and don't usually match employees' real day to day experience
https://www.insider.com/new-york-city-store-sells-overstock-...