Hi Matt, A quick way to come up with pricing is to multiply your costs by 3, this will give you a 33% food costs which is pretty standard.
So if you are paying $2/pound on a 75 lb hog your costs would be $150 and your sales price would be $450.
If you wanted a different food cost, simply divide your total cost by that percentage.
30%= $150/.3 = $500 selling price.
Hope that helps!