Lasers are definitely a you-get-what-you-pay-for tool. But the type laser you need really depends on what you want to do, and there are usually several quality options available based on your needs…small engraving all the way up to cutting metal…just add $$. 

But if you can define why you’d want to do with it, you can figure out the median cost of a type device that will meet your needs. Then at least you’d know where you stand. 

Ryan/// ~sigh~ I blew up another bowl. Moke told me "I made the inside bigger than the outside".