You get what you pay for and unless you are an experienced laser person and can repair machines then stick with USA based companies with support. You see them all the time posting on here after they have purchased cheap Chinese equipment. These machines are not plug and play like a inkjet printer they require time to learn.

Rabbit laser USA may be higher priced but they support what they sell. FSL has a poor reputation from customer service issues in the past.

Do some Searching and reading on here before purchasing. Many of those questions you have posted have been asked and answered, over and over again.