Found this website called eneba - some good deals

The reason the games are so cheap is the same for ANY keyshop(HRK,Gamivo & the likes)-who knows where those keys are from

For this site I have good words to say, until now. I have bought two games without any extra hidden costs and I haven't any problem. Also I found that site from a Youtuber, if that is says something.

Well, sure the prices can be great but it is just another G2A.

Thank you, some good prices there.

Just be careful, when using key resellers. Here is some information about them for those who might not know:

https://www.reddit.com/r/Steam/wiki/dangersofkeyresellers

Yup, looks exactly like another G2A, with different "merchants" offering keys. There is a surcharge on card payments (like extra $0.41 for $1.37 payment), but for me another payment option was present with a fee of just 3 cents or so. In my case, it's much better, than what I could get at G2A, which has fees so high, that I've never bought anything from them.
So I've got myself:
3Switched for $0.13;
Jack Orlando: Director's Cut for $0.21;
Earth 2150 Trilogy for $0.21;
Royal Heroes for $0.29;
The Warlock of Firetop Mountain for $0.53.
Thank you :)