yep. it's like the rental on a tugger.... if you own one, then the
rental goes in your pocket, but the tugger still gets charged for.
nobody tugs for free.
That's one huge line-item many beginners and hacks don't add into their bids.
Tools cost money. You may already own the tool outright, having paid cash for it years ago, but eventually it will wear out/break down/get stolen/need repair.
Bigger stuff, like bucket trucks & lifts, need vehicle licenses, insurance, storage space.....
If I go out on a job and need to use a high-$ tool, like a locator or special meter, the price goes up.