Hi again, Enja
At such an early stage, I don't think you need to be blinded with science! I assume that you are sure that your Parents will be able to satisfy the Balance of Family Test?
There are two types of Parent visa as you say. With the non-contributory Parent visa, the wait is a lot longer than 10 years. The example on the DIAC website talks of about 10 years assuming that the person was added to the Queue on something like 17 June 2003, which is almost four years ago. Therefore the real-time wait for this person is going to be more like 15 years by the time the process is finally over.
Currently, the Contributory Parent 143 visa (the one they all end up with even if they split the process into two stages) is taking 12-15 months to be processed and granted. At present, assume $30,000 AUD per parent for the visa itself. None of that is refundable. $1,340 of that is the cost of processing the application. The remainde - the bulk of it - is a Contribution to the parents' future health-care costs in Australia, since they are eligible for Medicare from the day they arrive in Australia.
In addition, the visa has to be supported by an Assurance of Support, backed up by a Bond. The amount of the Bond is presently $10,000 for a single parent or $14,000 for a couple. The money is held for 10 years and is then refunded in full so long as there have been no recoverable claims on Centrelink (social security) during that time. In the meanwhile, the Bank pays interest on the Bond every six months, so both the capital and the interest on this bit do come back to the family.
The Assurance of Support is a potential trap for the unwary, because the Assurer/s is/are required to prove a minumum level of net assessable income (ie income earned and taxable as income tax. Assets are irrelevant in this test.) For more information about the level of income reqiuired currently, please see this article by Alan Collett of Go Matilda, who also posts on this forum:
http://www.gomatilda.com/news/article.cfm?articleid=214
and also
http://www.gomatilda.com/news/article.cfm?articleid=391
You asked about long-stay tourist visas as well. Please see here:
http://www.immi.gov.au/visitors/tourist/676/index.htm
There is no reason why the Parent cannot spend most of the wait for their CP visa in Australia if they want to, using one of these long-stay tourist visas. My mother did this last year. She now has a Contributory Parent 143 visa and is back in Australia as a Permanent Resident, so do not let anyone tell you that this cannot be done, chum!
Come back to me if you have any more queries, and it would be helpful if you could tell us your parents ages. When people want more info about what is possible, the age of the parent plays a big part in the way DIAC thinks.
Cheers
Gill