I run a pretty tight budget. Twice a year, I get a fun surprise from my domain registrar (because I have two domains with them). They both come with a "free business card generator" that I have never used, but whatever.
Anyhow, every time a domain comes up for renewal, it's expected, budgeted, and paid for. All is good.
Then, about a month later I open my email and see an unexpected additional "receipt" from them. This sends me into a brief panic until I realize it's a $0 receipt for the business card bullshit.