Denis
If you look on George Lombard's website (which you can easily find by doing a search on British Expats) he gives a price for Contributory Parent visas. I would guess that that price is in line with MARA guidelines, and should give you a reasonable idea of the likely fees.
Having said that, Contributory Parent applications are not difficult to do by yourselves. It is tedious, making sure that you've got all the details right, plus filling out the forms, but I suspect it is nowhere near as difficult as trying to put any of the send migrant applications together (not that I've ever tried to do one of those, and loads of people seem to be able to manage even those without help, when they look fiendishly complex to me.)
Grayling did his own CP application. Stubbyholder would have been able to do his own as well had he chosen to. My mother is in the process of applying for a CP application at the moment, and we are not using an agent. If I were going to use an agent for Mum, I would choose George Lombard, despite his not being in Perth. Failing that, I would be inclined to ask Alan Collett whether he has a hook-up with an Agent in Perth.
However, I've read your earlier posts, and I suspect you might well get into a muddle trying to make an onshore application for a Contributory Aged Parent visa for your Mum. I suspect that you will find that a much better route is likely to be to make an application for an ordinary CP visa from offshore, and then arrange for your mother to go out to Australia for most of the processing period of it, using an extended tourist visa. This is what we are doing with my mother, and I reckon it is a much better option than the one you have in mind, because it avoids the restrictions on bridging visas (eg no access to medicare, whereas a tourist visa gives all the usual tourist-rights to medicare.)
All that is quite complex to explain, so I will go offline and compose a more detailed reply, so that I can just copy & paste it when it is clearly-enough explained to make sense to somebody else.
QROPS! Myth or Fact Sender: Alan CollettHello again George. Using the same numbering: 1. In the UK there is generally a facility at retirement age for retirees to have the choice to take a lump sum as well as an income...
Regards
Gill Palmer