Wondered if you could help

I sold a half a pig £80 to friends and they are delighted. They also would like a couple of joint's and chops for her sister, which is fine.
Whats a reasonable price? Looking around they are so varied; I'm not looking for a fortune, just reasonable price for the item, Ill put any money back into stock etc. Appreciate your input.
What I have is as follows.
Leg on the bone 2.5 to 3.0 Kilo
Shoulder boned 2.0 to 2.5 Kilo
Chops bag of 4 approx 1.5 to 1.8 kilo
Breakfast sausages Pk of 6 approx 1/2 Kilo