The new compulsory fee – of up to £1,000 if the defendant is found guilty – was introduced by the former Justice Secretary, Chris Grayling, to make criminals pay for the running of the courts.
Public broadcasters levy a compulsory fee, but relatively few people pay cable or satellite broadcasters for extra channels.
Almost three-quarters (72%) supported Welsh government efforts to "nudge" people's behaviour through charges and taxes, for example by introducing a compulsory 5p fee for carrier bags.
Such a service is not covered under the compulsory fees satellite radio companies pay for broadcasting music.
The consumer group said that of the 20 firms it looked at, seven didn't always reveal the exact cost of their additional compulsory fees upfront, "making it difficult for customers to compare the cost of tickets between different companies".
The organisation gave online ticket companies a month to justify compulsory fees, such as the £2.50 some charge consumers for printing out their tickets at home.
Yet it has even proposed to hit households with a fine or compulsory fees if they quit the grid.
The local award covers tuition fees, compulsory fees, annual allowance, and book allowance.
Responding to the idea of more compulsory fees, the British Retail Consortium said the industry was already making progress.
Options included tax revenues, social insurance, voluntary contributions, private insurance, community insurance, co-payments, and a fee-for-service system, with the likely system being some form of pre-payment (through compulsory or voluntary health insurance).
