Scam. Beware, you will be tempted with one pretty girl who isn't really interested in you to pay a deposit which Michael will not return.
Update to owner's response: so all you can say is, if I ask for a refund for YOU not providing any service, it is just me being bitter and not you being a scammer?
Further, I will answer you: yes you have survived for 20 years by scamming, all you need to do is scam one person every 3 months, at 8-12k each. That's 4 clients a year or 80 total.
Beware all, the owner admits that if the marriage fails, it is your fault. If you were tricked by him, it is your fault. If you were misled about how the girl looks or whether she is married in Vietnam, it is your fault. If she had no intention of staying married to you and only wants to trick you into marrying her... it is your fault.
It is NEVER his fault, this is not a matchmaker this is a scammer who refuses to refund even if he does no work AT ALL
All the work, research, background check, is done by you because he doesn't verify anything the girl claims before coming and may even lie for her