Everyone has seen the screenshot: you quoted 490,000 but meant 590,000. Now you eat the difference or argue in the comments.
It happens when prices live in memory, in a personal note, or in a sheet that updated last night. The fix is one catalog, stock that decrements, and replies that are not allowed to invent a number.
Keyword bots fail this test because they were never looking at the row. DigiYar ties keyword replies, checkout, and optional assistant drafts to the same numbers your packer sees. When a size hits zero, everyone gets the same answer.
Put this into practice
Create shop account