Where to find dirt cheap steam keys? Like russian, obscure sites and the like.

No idea but your question made me think of this.

View attached image.

No serious shops have such "dirt cheap steam keys"

At best you land at a shady shop...

"dirt cheap steam keys" are usually stolen keys or acquired via scams. I would recommend getting your keys from legitimate sellers :-)

Can't help you there.

However a tip to those who are looking for discounts where they can get them

Allkeyshop is a good tool to get the cheapest price.

Also if you're looking for reasonably new games as a slightly cheaper price - I've found Voidu to be good - they've had a code running for a while now which basically applies to all their games and allows you to get new stuff slightly cheaper at or soon after release, something like 25%.

Only drawback is that I believe you can only buy 1 copy per account - so unfortunately I can't just bulk buy Katamari Damacy Re-Roll (Sad face)

Humble Bundle is pretty cheap. $1 for a couple of nice games. Or you can use em to trade what you really want on barter.vg or on Steamgifts in the Trading section.

plati, steamgrounds, yuplay, there are others but those are pretty much the only ones i've used