That's a good pro-tip, but the real pros order 10 of something they think will be useful in the future, and then let it sit in their parts collection for 80 years until they die.
> then let it sit in their parts collection for 80 years until they die.
Heh. I'm halfway there. I have parts in my bins that I bought 40 years ago. I even recently discovered I have an old 8085A microprocessor from the 80s left over from the first computer I built.
When I order parts for a project, my baseline rule is "order 3: one to break, one to use, one to kick around in your parts drawer for next time". Then I go back through my order and increase quantities of parts I know that I'll be needing again for future projects until the order total is high enough to qualify for discounts on shipping.