Price is totally dependent on the wreck. Cars don't get a salvage title for no reason, and salvage seems to confuse a lot of people. All it means is the damage cost more to fix than the car was worth, so the insurer paid out the value of the car and left the owner to deal with fixing. So, when it was salvaged is of paramount importance. If it was wrecked and salvaged a year after purchase, it was an enormous wreck and I wouldn't buy it at any price. If it happened last week it probably wasn't too bad and as long as it was repaired well you're fine.
See if they have pictures of the wreck and any insurance paperwork. That should help some.
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