35% off for all starter packs at Flexiroam (does not apply shipping costs)
Looks like they have a good coverage of 120 countries and a nice 1GB starter pack which lasts for 15 days (which costs 26AUD delivered - which is the cheapest I found).
(Original cost is 14.99USD - 5.35 USD (Discount) + 9.90USD (shipping) = 19.65USD which is around 26 AUD).
Enough for my travels and great for multiple countries as they have an impressive coverage. ( https://www.flexiroam.com/coverage ). Might be a better option than some local sims for some.
Would the validity of SIM still be ok if my trip was in December?