Aldi's big strategy is efficiency. Limited selection, limited square footage, you go in, get your stuff, the checker rushes you down the line, you pay and get the hell out, see ya next week.

A bag of onions/peppers/etc. can be scanned and swept down the conveyor, rather than count and enter how many (like Trader Joe's) or find the tiny sticker on the pepper with the code and weigh them out.

It's easier to stock, easier to track for inventory purposes, easier to scan and move down the line.