Of course, that's not where the story ends when it comes to the price differential between in-store shopping and Instacart shopping, and it's the tally at the end of the process that makes the biggest ...

How much cheaper was Trader Joe's? According to our online price comparison done in June of 2025 using online prices and prorated for equal quantity, Trader Joe's was 21.5% cheaper than Stop & Shop.

The answer to the question posed above -- how much more expensive is grocery shopping with Instacart-- is, infuriatingly: it depends. Using a grocery shopping and delivery service such as Instacart ...