If they were a proper $5 product, not a vapour $5 product them I would instantly buy 10 of them.
I just went to the stores listed as the distributors on
https://www.raspberrypi.org/products/pi-zero/thepihut will only sell one and don't ship to Russia anyway.
microcenter won't allow you to create an account with a non-US address
canakit will only sell one and want $49.95 shipping.
adafruit will only sell one, and don't ship to Russia (and minimum $14.90 to NZ, where I aren't right now)
pimoroni will only sell one and don't ship to Russia anyway.
Russian site electromicro.ru appears to let me order as many as I want (who knows if that's real...) -- but at 2000 rubles ($33.60) each! Might as well get a Pi3 for a bit more, or various others for less e.g. $23 for Orange Pi One or NanoPi NEO 512 MB, $20 for NanoPi NEO 256 MB (40mm x 40mm! Quad core A7 @ 1.2 GHz!)