Should I base my selection of a carpet cleaner purely on price?

Before making the choice, take into account whether they are a franchised operation or an independent operator.
Franchises will have additional costs which involve franchise fees and other expenses which must be paid to a franchisor.
Many franchised operations have their headquarters based interstate or worse overseas which means that most, if not all the money you pay will leave the state.
Independent operators will not have these costs and therefore they can generally offer a better price.
Of course, there are a lot of shonky operators out there, just like any other business and therefore some research needs to be undertaken before you make your selection.
Look at the business website which can give you a good idea as to what the business offers in terms of qualified technicians, insurance and work guarantees.

There is a standard that professionals adhere to, in techniques, equipment, mannerisms and cleaning standards.
If you are after a quick cheap job, then just call any Joe Blow offering cheap prices, but if you want a professional job and to look after your carpets properly call A1 Carpet & Upholstery Specialists.
We are proudly 100% Tasmanian.