what you will probably realise is that it's usually quicker and simpler to actually model the file from scratch.

The hand held scanners used in industry tedn to start at $20,000 and steadily work their way upwards from there.
That's what you actually need to do the job properly.

I don't know if anyone out there offers a scanning service or rents out industrial handheld scanners - but that's the initial route I would personally investigate.
As mentioned the einscan is pretty much the only handheld and desktop scanner within your budget. The desktop scans I've seen from it are pretty impressive. I've not seen any handheld scans of larger items though, so can't comment on that side of things.

My advice would be to try and rent an industrial unit to see if it actually does what you want it to.