Where to purchase this chess set !?

What are the dimensions, weight etc... 

Is it good for playing blitz? 

https://youtu.be/mqqTQ_bewSI

6.01.58 (time)

official championship set

https://shop.worldchess.com/shop/official-world-chess-set

or get a copy for about 100$

https://www.etsy.com/listing/626865187/reproduced-2013-world-chess-championship

I'd opt for the first choice you suggested the official FIDE World Championship set because the Knight pieces have a sleek and slender neckline profile to it. The RCM is a bit on the chunky look side for the knight pieces. In addition, you can get this FIDE World Championship set at the Chessbaron.com link a bit cheaper too with this link that follows, FYI; just copy and paste the information into your search box if it doesn't bring you to the website automatically. 

https://www.chessbaron.com/chess-X2077.htm#prettyPhoto

Is this a good chess set for playing blitz games with it on a 2.25 inch squares?  What are the dimensions, weight, height of the pieces etc..? 

Also what about the chess BOARD? 

I don't know if this is useful to you or not, but this looks like a good thread on king base to square size matching: https://www.chess.com/forum/view/chess-equipment/a-system-for-sizing-chess-pieces-and-boards-long

What about the board? 

What about the chess board? 

Do they ship to Russia? 

I couldn't find any on American chess equipment! 

Provide some links if you know they actually sell them now 

Here is a site in the USA that might be of help to you. They have a big selection of wood pieces. They have been here a long time, are completely legit. 

https://www.houseofstaunton.com/international-shipping