There aren't many 3D scanners that can scan shiny reflective surfaces, they all need a dull even colored surface for the best result,
There are some spray-cans that spray a dull grey/white surface, that can be wiped off afterwards without any damage to the surface,
or Chalk spray-can, some have had some good results with that.

Most if not all 3D scanners have a lot trouble with sharp corners, you always need to post-process the scanning data if you want to make a accurate copy of the object.
with your budget, the Einscan-S is your best bet, or add a little more and go for the Einscan Pro,
but don't forget you need a good PC to handle the large files

Have look here:
http://3dprintboard.com/showthread.p...r-scans-here-!

http://3dprintboard.com/showthread.p...st-showing-off