I want to buy this kit off of a friend for practice building. Problem is we dont know how much its worth. Its an old kit that was given to him years ago. Its a left hand percussion 32 cal still wrapped in the box. The only numbers I have found on the box are KA 756. Im assuming this is the model number. I have done an internet search for it but have found nothing. We are not looking to seel this rifle to anyone else. Just a beginning price we can both agree upon. We have been friends for almost 30yrs and dont want to cheat each other. What are your opinions on a price?