Rob, but why not introduce what is going to help dry the textile quicker?
More heat equals or should be used to equal a faster dry. Which means air movers and de-hu's and the heater can be turned off quicker equaling a saving not a higher cost.
Not only that but and I know this is just an example,
9ft x 12ft rug = £200 to £300 or more
Heat cost, air moving cost and de-hu cost, a few pounds at most. Lets be silly and say £20......... well need I say more.
If we invest in this business to become better at what we do then we can charge more.
If a cleaner is going to clean a rug with all the goodies to help not just dry the textile but clean it to a higher standard then he or she has every right to charge more for their services. That would leave the cleaner who doesnt, offering a less of a service and accordingly always complaining about not getting what he thinks he deserves although not coming up with the service.
Best, Dave
P.S. Cloverleaf, well stated and good on you for finding that amount of rugs to clean. Where are you as I may be able to get you some more rugs to clean if you want or need them.