@whitejoseph
Hi There, You will get plenty of sites in google and some of them are a scam, even I've faced the similar situation when I was looking for an essay writing site, so I asked some of my friends and even I've done these process to find out the authenticity of the site.

1) Always check whether anyone has posted on any review site for them.
2) Don't rush in selecting fake company because it may cause you lots of money and time
3) Always conduct a bit of research on the website,
I've done the same for Tutorversal and found it to be genuine and they were even providing Turnitin report free , so you can avail their services if you want to