My friend in St. Petersburg got this message (from Ebay) when he bought a laptop on Ebay (The shipment was canceled):

"We are writing to inform you that your recent purchase through the Global Shipping Program from [ Seller Name ] cannot be completed.
The item in question has been deemed restricted. This could be due to import/shipping restrictions or eligibility requirements within the Global Shipping Program. The item will not be shipped to you nor returned to your seller."

The "item" is a Lenovo Thinkpad X1. Hard to see this as being some sort of advanced "hi-tech" item, whose shipment from US to Russia is "restricted"?