As I mentioned in a blog post on March 17, the search fee that a a US PCT filer would pay for the Russian patent office will increase on May 1, 2017. The search fee, presently $449, will increase to $482.
This offers an opportunity to save a little money. If you are a US filer, and you were thinking about filing a PCT application in which you choose ISA/RU, and you were thinking of filing the PCT application on May 1, just file it instead a day early on April 30. This will save $33 in fees.