I think that the answer isn't straightforward.
Customers will care about the additional charge.
However, if all tradesmen are subject to the same regulations, then consumer prices will simply go up, and as long as it remains a level playing field, then service providers will not be any worse-off, because their rivals and competitors are all subject t the same higher costs.
This is exactly what happened when regulation was introduced mandating the use of proper recycling for used engine oil, and later also for used tyre - garages simply rolled the cost over to the consumers.
This, however, raises a much bigger issue. Regulation intended to improve our lives (whether by preventing pollution, or by ensuring that people have the right qualifications e.g. gas engineers and electricians, etc etc), without fail increase the cost to the business which ultimately results in price increase to consumers, sending the cost-of-living spiralling upwards. In fact, this also touches on employment laws, such as minimum wages, mandatory workplace pension etc - they are all good things in themselves, but ultimately paid-for the consumer.
Where do you draw the line - what is the optimal balance between protective legislation and regulation on one hand, and ensuring that goods and services remain affordable on the other?
I don't have a simple answer, and in fact, I am not even sure that there is one.