okay, first.
forget $500 - there are currently no viable commercial scanners under ?1500- $3,000

The einscan scanners are pretty good, But the desktop model won't do something as big as a motorbike.

My current recommendation would be the scan-in-a-box: https://www.scaninabox.com/
Not cheap, but very good.

The other way you can go is a diy setup using the xbox kinect.
https://www.microsoft.com/en-gb/p/3d-scan/9nblggh68pmc - there is even an app :-)

But all the budget scanners will do is raise your blood pressure and fill the swear box :-)