Haha... like we couldn't see this coming.
Leave it up to the consumers to try to abuse the system. And also leave it up to the local-run business to cheap-out, rather than being smart and cashing in. Really, how much do cucumbers cost here?
If they were smart, they'd learn from the buffet restaurants and impose a penalty for not finishing the salad (based on weight of leftovers). I would love to see these guys get sick from eating their 3 jing horde of cucumber slices and salad dressing.