Lots of folks here giving "one off" advice.
I recently saw a batch of those rifles and they are mostly mixmasters in GOOD only condition. They've been FTR at one time, issued, cleaned, soaked in preservative and put into long term storage before being sold onto the surplus market.
Many of them have late fifties dates. I was hoping to find one with a BLADE bayonet. No luck.
If you're looking to get in on an inexpensive, entry level SKS, these will be fine. Marstar also has a good return policy if it doesn't work or has broken parts or you just don't like it.
As I said, these are in GOOD ONLY condition. Lots of dings in the wood, worn bores, worn blue/finish. Still, they will likely perform as well as an SKS sold for twice the price. Then if you want something in better condition you can sell it for close to what you paid for it and put the money toward it.
Now, if you are having trouble coming up with the money for an SKS, can you afford the ammo to shoot it or the cleaning utensils needed to clean it if the ammo is corrosive?? A lot of newbies don't take ammo/maintenance costs into consideration when purchasing their first firearm.