I promised myself I'd upgrade my QMS, then we got a few customers, then the sun shone - tbh it doesn't take much to stop me doing it, so no I haven't but it's on my very long list. The customer pays whichever way you do it - we include the cost in the quote, it's less for the customer to think about, so far it's been relatively easy to get the EPC done - I've actually been quite impressed with the service that we've had, all done overnight.
I'm really pleased I didn't bother with the DEA training. I reckon if I do marketing for the 2 hours it takes to measure up and enter the EPC I should be able to generate many more jobs. Far,far easier to pay someone £40 - £50 and lets me get on with what I do reasonably well.