You mentioned Russia specifically, but I’m going to assume you’re talking about a standard league rules bid.
I think it depends significantly on the skill/experience of the players. Here’s a breakdown I would suggest as a starting point for players of equal skill:
0 -> Complete Noobs – For players with little to no experience, especially when there hasn’t been outside influence of things like YouTube strategy videos.
16-24 -> Irregular Players – For players with some experience and a reasonable handle on general strategies, but lacklustre execution and minor mistakes.
24-30 -> Strong players – For players who play regularly, know how to win, have good execution and few to no mistakes.
30+ -> Expert – Mostly for higher tier league players with tons of experience and ability. (although most of them play balance mod instead of using a bid)
If you’re talking about team games I might consider an additional premium for the allies because they take significantly more coordination, which is harder when you have teammates.