it's very interesting to watch how a whole bunch of people are trying to solve a problem that doesn't really exist, the essence of which can be easily understood without turning off the forum's ignore function. $1 is now about 40 UAH, so the price of a $4 key is 160 UAH. A game in Steam at a sale costs 124 UAH, that is, a buck less.
The next Steam sale - is tomorrow.
The biggest Steam sale - in a month.
It's not about the impossibility of purchasing something, there is no better solution than buying from Steam directly. Such a cool bundle, as was on Humble, will not be repeated soon, i think. Also, despite regional restrictions, unlike some other games in the series, RE0 doesn't have a run restrictions, so an international key would work as well. (The last fact, of course, it is better to check with your own hands, but I believe only Revelations 2 has RU+CIS run lock).