Worse than that.
replyCoffee usually _is_ a round number in my experience, and I know of people who aim for round numbers when filling their car, and of fuel stations which require a pre-set value, often 10, 20, 50€ etc
All of that is easy to account for, all of the metadata you need is available. This also applies to the sibling comment about rounding up to charity at the grocery store, the data is all there, even if it's e.g. the fraud analyst at the bank or credit card company instead of the fraud analyst at the grocery store.
replyI'm seeing a few stores here and there which have a "round up to donate" option. I guess I'm a bit of a sucker and I always use that option. My groceries are always a round number as a result.
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