There were only 402,713 of the G43 made in 1943 to 1945. Condition would dictate the price of it.
As I recall while all of them had provisions for scope mounting, the plan was for only about half of them to actually be issued with a scope. Only about 50,000 G43/K43 rifles were actually prepared and issued as sniper rifles.
In actuality, Zf4 scope production was only somewhere between 100,000 and 150,000 units and this was the only scope the Germans ever put on the G43/K43. Consequently, at best only about 50,000 to 100,000 non sniper G43/K43 rifles ever got a scope. The vast majority were shot with iron sights and scoped or otherwise most them were employed as company level designated marksman rifles with just around 50,000 intended, selected and specially prepared as sniper rifles.
In addition German troops were expected to destroy a semi-auto rifle rather than let it fall into enemy hands. At a minimum this meant breaking the stock to prevent immediate re-use and damage to the action or barrel was preferable. Snipers in particular were far more likely to pitch their rifle under a handy tank tread rather than let it be captured, unless they were shot dead first. Consequently, the number of captured rifles was far less than the number issued.
Yet everyone wants a G43 / K43 "sniper" rifle and feels it is not complete without a scope when the actual occurrence of a G43 or K43 sniper rifle is down around 5% to perhaps a maximum of 10% of the total rifles that survived the war. A scoped G43 or K43 of any kind is at best only around a quarter to at most a third of the rifles that survived the war.
Logically, a G43/K43 buyer should not expect to find a scope with the rifle as only 1 in 3 or 1 in 4 of the G43/K43s encountered should have a scope.