That's what Womble looks like, MiriMaran. Honest, I've met him.
The Hubbards went back to Jamesfield; a day old cost £1.20 and to have them killed and dressed (roughly) cost £1.60, so there's £2.80 to start. I had three 70 mile journeys, so 210 miles (one to pick up the chicks, one for the killing and one to pick up the dressed birds). If you cost that at 40p per mile, which is HMRC mileage rates, that's £84. If you take my time for the journeys at £6 per hour, that adds £24. On a batch of 10 birds that's £13.60 before food and bedding. Doesn't take a genius to work out that it's not even breaking even.
Since the majority of the cost is fixed, doing bigger batches woudl make it more cost effective, as woudl killing and dressing ourselves.
Andrew reckoned a bird cost £6 each, for buying and feeding, but it doesn't include time or travel to pick up.
Now I've written it down, I think we need to rethink this.