Comment by hannasanarion

What you're describing isn't fraud, it's arbitrage: buying low, selling high. Just because Doordash are a bunch of idiots for selling stuff for way less than it's worth doesn't make it illegal for me to trade with them in good faith on their own terms and profit.

Nobody's lying to anybody, no price fixing is happening, or anything. Doordash agreed to sell a product at a price to any of their users, and they are fulfilling the promise they made, end of story.