I'd recommend not buying from third party sides as you don't know whether the accounts are legit, hacked or whatever, you don't know the source.
What I would recommend instead is, that you buy whatever edition you prefer from the official EFT website while on a CIS IP/VPN. This way, you'll get the game in roubles and thus, much cheaper than buying it in any other currency. Only "downside" to that is, that you'll have to login and start the game for the first time with the CIS IP. Afterwards, you can close the game and use your original IP forever.
In addition to that, you can always convert the region of the edition you've bought to Europe if you don't feel safe playing with a Russian account all the time. Upgrading the edition from XY to XY works as well.
If you don't mind me asking, what's the usual price for an account on CIS?
EFT Accounts
in Pre-Sale Questions
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If you don't mind me asking, what's the usual price for an account on CIS?