Oh, completely agree. Didn’t mean to belittle them, in fact I worked with them when building up Hoolie’s root CA a little while back.
All the certificate proves, though, is that the person requesting and receiving the certificate has some ownership of the website.
And here’s the LinkedIn of the guy owning it: (1) Yuriy Litvinenko | LinkedIn
Alright, I’ll take one for the team and get in touch with them and come back to report 
They are from the future:
„Buying and selling of own real estate“.
I‘m no real estate company expert, but honestly wouldn’t be surprised nor concerned about losing a few thousand here and there in some years (especially if that‘s not his only business). Neither about using a letsencrypt certificate (as was said already).
There is a „Contact us“ with their address on their website.
In this case, they can also pay 30% p.a. guaranteed. 8.5% is pure avarice.