Depends on WHICH rifle you had in mind. A Mosin-Nagant 91/30 can be had for $90 if you look in the right places. A pre-922r Dragunov... now you're getting into the $5000 - $6000 range (even the Chinese copies are in the $3000 - $3500 range). Tokarev SVT-40, you're looking at $800 - $1000.
Depends on WHICH rifle, unique markings, arsenal it was manufactured at, and overall condition.
Depended on the rifle. $5-$500
blue
No such weapon.
$10
20 billion
50-500 USD depending on specifics
in general 180 $ is the minimum for a reliable rifle.
MiG-29 cost about $11 million.
$ 9000
Russian whites are on the middle of cheap and pricy for hamsters at petsmart.
$2300+