My plumbing experience was to have the plumbing disconnected under the sink so the counter top and new sink could be installed. I thought the service of $115 was high, but usually if there is an additional fees, it is usually rolled into the cost of repairs or labor. This company also charged 3.75 % for putting it on a credit card, which was not mentioned until I received the invoice in the mail after paying on the phone.
Plumbers in Australia have licensing requirements that differ from state to state but it is generally accepted a 4-year apprenticeship with a further minimum experience of 2 years (6 years total) and a further curricular requirement as a benchmark for licensing. Licensed plumbers are also expected to maintain minimum relevant training requirements to maintain their plumbing license