Need to know caliber, barrel length and whether it is a revolver or semi-auto pistol in order to answer.
100-400 or so
Need to know caliber, barrel length, whether its a revolver or semi-auto, if a revolver is it DA or SA, finish, overall condition, does it have the original box, papers, all markings,etc..
Depends on model (and there are DOZENS of models of High Standard pistols) and the condition.
50-150 USD or so
Can't be answered without knowing caliber, barrel length, number of shots, finish, whether a revolver or semi-auto.
Can't be accurately answered without knowing if it is a revolver, semi-auto, caliber, finish, barrel length and all markings.
gun shops, gun shows, estate sales, pawn shops, garage sales, for sale ads, want ads
About $100-$125
Caliber is .45 GAP (Glock auto pistol)
Can't be answered. It's like asking "I have a 4 door car and it says Bel Air, what is it, who made it and what is it worth. What engine does it have?"
Yes- but not very common. There is an automatic pistol caliber known as the .38 Super, which does not interchange with the .38 Special revolver cartridge. There have been a small number of target pistols built to shoot .38 Special Wadcutter target ammo. And there is at least one auto pistol made in caliber .357 Magnum (revolver cartridge). However, revolver ammo is rimmed, and auto pistol ammo is rimless- there are usually feeding problems when an auto pistol is made for revolver ammo.