Requesting 'Cash Jobs'

Gordon from Halswell

Now and again we get people requesting services from tradespeople and mention "cash job".
That phrase would indicate that they are expecting a cheaper job as the provider might be able to make up the discount given to them, in other ways, so they make their correct profit.
The obvious way of doing that is by not putting the money through the books as a "cashie" thereby saving on GST and income tax.
Some people with more money than most beneficiaries, criticise beneficiaries for, in their mind, are getting more than they are entitled to, so they are cheating the system.
Is there any difference between the two groups of people?