BORE CONDITION. make sure it wasnt rode hard and put away wet after shooting corrosive ammo.
I have a typical russian refurbished SVT-40, if I had the choice I would take prefer either a non refurbished SVT40, or a Finnish captured SVT40
make sure its not missing ANY parts, look for cracks in the stock or hand guard.
you can still find them for a decent price if you are patient. I got one in 2013 for $850, which is "decent" but not a steal. everyone is trying to get 1000-1100+ for one online nowadays or at the gun shows around here.
Somewhere along the line with my SVT40 somebody decided it didnt need the cleaning rod, safety switch or rear sling swivel anymore
My stock just so happened to require a swivel which screws into the bottom of the stock, not the more common sling slots cut into the stock. It took 2 months, a billion calls and emails around the country before I finally found a spare swivel in Canada.... thats why I suggest making sure you get a complete rifle