Look on ebay and you may find a midpriced decent scope for $100. You get what you pay for and most muzzleloaders have enough recoil they can destroy a cheapie. You may get lucky and buy a cheapie and it last forever or you may have a failure such as fogging when you arrive for a morning hunt. Look to Bushnell for a scope in the 69-99 dollar range if you go the cheap way.