I bought an item from Russia a couple of days ago and then the seller cancelled the order and refunded me. According to ebay it was solely the decision of the seller, which is understandable in this uncertain time, and not a political decision by ebay. The word was that ebay does not cancel transactions - only the seller can do that. I don't know if that's 100% true but that's what they say.
But in the wider picture, are postal services with Russia happening or being interrupted? UK talks of banning Aeroflot from landing for example. This is a fast moving situation so anything could change.
There's also the question of whether we should be buying anything from Russia, and whether we make any distinction between the Russian people as individuals and the Kremlin which is totally responsible for the invasion.