We've just changed suppliers (still through our local feed place) and have got it down to £6.70 /20kg bag when buying 1/2 a ton or more on a pallet - I'm much happier!
On the cheap sale - I used to be the same, when we just a had a backyard flock of chickens, I would never take money from friends for the odd half dozen eggs as it was a hobby and to even start thinking about trying to cover costs was too daunting.
Now I have to make a living out of our new place, my attitude is totally different. Everything has to pay its way, out half pigs work out at ~£145 butchered and we still sell them all. When you compare the per kg costs to that of organic rare-breed pork at waitrose (which is the comparison you should be making) then ours still look like a bargain!