@jellybirddesigns wrote:
Paying a $100 for formal identification is worth it to carry on earning an income, even if the passport never gets used.
A passport is $300. That is the kind of up front cost that is easy for some to make, very difficult or even prohibitive for others. A learner's permit is $67 in SA, though (looks like $25 in NSW?), so if looking for the most cost effective form of acceptable photo ID that won't ever be used for its intended purpose, that may be the way to go, though requires a bit of homework to pass the initial test.
Every other site (including PayPal) that has asked me to prove identity has accepted any form of government-issued photo ID, which extends to proof of age cards in most states. In NSW it's just called a photo card and is issued by the same government service that issues driver's licenses, and on the website even states "Because the Photo Card has the same application process and security features as a driver licence, you can use it everywhere that accepts a driver licence as photo identification.", so there is no reason eBay can't accept this form of ID too, except for just wanting to be short-sighted and exclusionary.
But just needed to add it does cost money to take the initial test (in addition to the license cost), so I guess you'd want to make sure you pass the first time, but if you can manage it, the total cost would be around that $100 mark (eg test is $38 in SA and $47 in NSW, combined total for one attempt & pass making it $105 in SA and $72 in NSW). 
