Apart from the odd exception, Australian general circulation decimal coins are not rare or valuable.
It would depend greatly on the condition of the coins and how complete the set is. Some coins of the same denomination have minor differences and/or were minted at different mints.
If the coins have been circulated but in good condition, probably not much more than face value since many examples of them will still be in circulation.
If the coins are Mint Uncirculated sets produced by the Royal Australian Mint, an average for each year set might work out to about $50 each.
If the coins are Proof sets produced by the Royal Australian Mint, an average for each year set might work out to about $60 each.
A reputable coin dealer will be able to assess your collection and give a valuation on examination.
It should be noted that any Mint Uncirculated or Proof coin set should be in the original packaging and condition.
Such a coin does not exist. The first and only round Australian 50 cent coin issued for circulation was issued in 1966. There was a round commemorative Proof coin issued in 2006, but not for circulation.
Some years had more than one Proof set issued. If the coins are Proof sets produced by the Royal Australian Mint, an average for each year set might work out to about $60 each. A reputable coin dealer will be able to assess your collection and give a valuation on examination. It should be noted that any Mint Uncirculated or Proof coin set should be in the original packaging and condition.
i have a book of Australian stamps from 2006 and it says the mini sheet is worth $2.50
That is too much information to be listed here. It would depend on whether you refer to Mint Uncirculated sets, Proof sets, or precious metal sets and which variant of any of those sets including the means of presentation and or packaging.
Australian Airlines ended in 2006.
My Hats Collection was created in 2006.
The Collection - 2006 The Collection Dolly Parton 1-48 was released on: USA: 14 July 2011
2006
Australian School of the Arts was created in 2006.
Australian Literary Review was created in 2006.
Australian Rugby Championship was created in 2006.
Australian Provincial Championship was created in 2006.