........but there are so many more permutations to the equations than the the random few you 2 select.
A few to consider are;
Quality
Freshness (not that much is fresh these days)
Indeed the 1/2 price specials are a must to stock up on, however on the other hand the price of corn (or whatever) can be 69c a cob on mon/tues but on wed but a simple sign change is at $1.25 - this is a constant with many vegetable!!
All part of the HUMAN experiment - like most of lifes experiences.
Remember to smile & get on Manchester United this w/e!!