I can think of two instances from the past year or two where this happened: "printer cable" (USB-A to USB-B?), and USB-A extension cable (both at separate times). I think I spent ~$10 for each of these, so my total bill was $20.

So $20 fee to pay for getting rid of a bunch of other cables I didn't need years ago and saving ~500 cubic cm of space.

And I gave the printer cable away to a friend when I was done with it, happy to repurchase it in a few years in the increasingly unlikely scenario that I need it again.

The dollar amount and delivery time is a good rule is a good one. This varies quite a bit based on the nature of your projects. The month might be flexible. Maybe a quarter or half year for some people?