@Youngandhopeless as Wise Enough said if you are unable to carry than Surrogacy would be an option for you, her advice of a 2nd opinion on the AMH levels and the idea of freezing eggs now would be something high on my priority list.
I can see you are in QLD unfortunately my experience with Surrogacy only extends to VIC and WA but it is definitely legal to do Surrogacy in QLD. Freezing and storing eggs isn't too expensive, though I am not sure if you would be entitled to any Medicare rebate as it would be for Surrogacy (I'm just asking on the Families Through Surrogacy Facebook group).
Costs for Surrogacy can vary, the average is about $70K either here or overseas. They both have ups and downs. My advise would be to join the above facebook group, they are very helpful