Never seen those; may take a bit to grow on me.
I really thought Tehnolog was sell-to-distributors only. Pretty sure stores would be delighted to ship, though probably expensive. Last I heard, Russia was warmer to Canada than the US...
Pegasus Hobbies imported a number of things, and some stuff was sold under Urban War, both mostly scenery.
There are some private re-sellers out of Russia that flog on eBay. I'd suggest a search here and there for Tehnolog, Z.O.D., Robogear, and one that alludes. Began with Bron, I think.
Anyway, might give you some starts.
Edit:
Crud. Most of their stuff seems to be 1:32/54 mm. Too big for what I was looking for
Robogear is mostly 28-32mm. Z.O.D. is in the 10mm-15mm. I.E. ALL over the place. ;->=
Doug