My favourite of these type programmes is Wheeler Dealers when Edd China was involved.
Mike Brewer "does the deal" and poor Edd ended up doing all the work, but at the end, there's no mention at all of the labour fees that would have been payable for Edd's repair work. We watch Mike tot up all the costs of purchases on the screen but old muggins Edd doesn't get a mention (although the latter programmes did start to mention the number of hours of labour) and at the end, Mike celebrates a £300 profit which if adding in Edd's labour costs, would likely be a £2,000 loss.
Love Edd...Mike, not so much.