When reached out to for comment on Aldi’s Surprise Bags, Too Good To Go told BuzzFeed, “While we don’t mandate what our food selling partners put into their bags, we do give a recommendation that the value is approximately 50% to1/3 off the retail cost. When reserving in the app, the consumer is able to see the original value, though there are times wherein the value of what they pick up exceeds this amount if the partner has additional surplus.”
According to the company, their partners are trained when they’re onboarded, and they would much rather see the surplus in the hands of a customer than thrown away.
Source: https://www.buzzfeed.com/claudiasantos/aldi-viral-too-good-to-go-bag