In reply to micdesign:
They are hand made as it is. I suspect that the price of the shoes doesn't really reflect the number of hours needed to make them. As Al says one-off shoes would probably be incredibly expensive. There used to be a guy in North Wales called Richard Stanley who made rock boots - Bryn Boots, I think. I remember Mal Creasey climbing in some that had been custom made for him at Tremadog... but that was a long time ago. No, it just wouldn't be a viable thing.