Wonder how they calculate this with any accuracy. They can't see the time you spend comparison shopping on other online sites to see if you're getting a good deal. (which you usually aren't - Target and Costco, for example, often dramatically raise their online prices vs. their in-store prices)
Agree on the farm boxes - had one of those and we were overloaded with produce. Bit expensive but once you taste fresh carrots it's hard to go back to store bought.