I have been asked to find a all white, or as near as possible, budgie that doesn't have red eyes. How uncommon are dark eyed whites ? Of course this would have to wait until I get my new cage but I am trying to get an idea on how difficult this will be to achieve.

Tal, there are two common Budgies that are all white, which don’t have red eyes, there are Dark Eyed Clears [DEC], which are a combination of a Clearflight split Recessive Pied mated to a Recessive pied…which then can give you some white birds which have a plum sort of colour eye without an iris ring…

 

Then there is the Double Factor Spangle [DF Spangle] mate two Spangles together & some will turn out clear, these will get an iris ring as they mature [approx 3 months or more] of course if you want white it has to be bred from blue series birds.

Since you live in Australiea Id say common.

Common from what i've seen in pet shops.