Unless you sell Mixed meat boxes of say Beef, Lamb and Pork the next best/only way to see profit on pigs is high quality sausages, these can bring in a penny a gram with ease.
Have the butcher make some shorties at 3" vacuum them in packs of 2, make some awesome labels (like mine) and go round an affluent area knocking on doors and handing them a postcard and pair of bangers.
Once you have given away 10kg I suspect you will have so much demand you will have to start a waiting list.
But do them justice, charge a fair price- A penny a gram.
The kind of people who will call you or email at that price will be the ones who appreciate quality and care about the provenance and welfare of the pigs/pork, and now is the time, rarely has there been such an opportunity for a foodie entrepreneur.
Also take your pigs to 130kg live weight, the shoulders and legs are immense and you will have super back bacon and Pancetta to offer too.