system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why is some produce like avocados and limes sold by the count instead of by weight?
gpt
They are very similar sized. This takes the guesswork out of the purchase as the customer knows their total commitment before they have it weighed. That encourages more purchases.

Items that have more of a variance in weight would be scrounged though for the heavy ones. Its a good idea to discourage people scrounging, not because they take all the large fruit but mainly because they damage the leavings.