wedrifid comments on Against picking up pennies - Less Wrong
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Comments (43)
I had assumed the cost would have been related to the volume of the coin storage in the machine relative to the associated stock.
Many banks will count them for you with a machine; you just hand them everything in a sack, so it doesn't have any significant cost.
Going to the bank is not costless, especially since they keep hours that are not at all useful for wide swaths of the normal working population.
I probably should have said "hypothesize" rather than "conclude." My memory from when I operated an (antique) vending machine was that it had plenty of wasted space. I certainly wouldn't want to introduce a machine accepting pennies into the existing world in which they are otherwise useless. But if storage is an issue for the machine, it's also an issue for people. I don't normally carry any change.
Another source of information is automated coin counters. I had one bank that offered the service for free to customers and another that charged a percentage. I've seen a free-standing one (a vending machine that takes pennies!) that charges 15%. So maybe Tailsteak should discount the number by 15%, but no more.