Hi, Lu
We put some cost in the Articles on the website. We use DS Stevenson at Dunblane to slaughter (£25 / pig) - it's small and as friendly as these places are, if you're not a pig! Stevenson's delivers to lots of butchers in the Central belt. Our last ones went to HW Irvine (aka Porky Irvine) in Blairgowrie. He made our sausages and bacon too as we just didn't have time - and very good they are too. (£50/pig plus extra to slice bacon and make sausages, due to the price of natural casings)
We charge £3/lb for a half pig, which is probably underselling a bit. We've never had enough to approach a butcher - unless you're planning to sell a lot, you will be able to shift it privately. I think most butchers will want a regular supply - but I may be wrong.
Lots of posts about fencing and arcs so won't repeat here.
We should get ours in April - if you want to go with me to pick them up, PM me.