Do a search on "Made in china" there are a lot of units sub $ 1000.
Down side is you have to buy multiple units from most factories.
The cheaper ones have smaller burn length, fewer cycle choices so you need to adjust the distance away all the time and like cheap welders, have a short duty cycle so you have to do big things in several sessions.
For a comparison, vapour blasting cabinets start at $ 5000 ( + compressor ) and go up to $ 30,000 for jobing units + chemical & abrasive costs .
Dentists have been using lazer cleaning for a long time, quick, easy but stinks and leaves a shocking taste in your mouth .