you are asking if the site is
legitimate?
legitimate
adjective
according to law; lawful:
the property's legitimate owner.
This site offers service prohibited by law, this site is not providing legitimate services.
You want to buy identity to what end? to steal? kill someone?
Create accounts with false documents in payment processors?
Do you think this a good thing? I don't recommend that you use these sites, you don't need to hide their identity, only thieves hide their identities.
maybe OP asking about whether this website is a trusted website or not,from the services they offer it's indeed not encouraged to be tried
but if the point is about whether it's trusted,just see the website's whois data
Important Dates
Expires On2018-05-26
Registered On2014-05-26
Updated On2014-05-26
means the website already planned to be active in 4 years,and scam website rarely buy a domain in 4 year period at once,but there's no review in google so far (maybe),it's all up to OP