I just bought one of these and it cost me £17.99 + £1.95 for delivery. Based on the exchange rate quoted during the transaction, the total cost will be about AUD $45 (update** Paypal receipt just came through at $45.28) I also used my 28 Degrees Mastercard to avoid the overseas transaction levy that most other cards charge.
I thought this was pretty good as most USB drives seem to run at about $0.50 per GB so this seems cheap at $0.35 per GB.
I plan to use it to increase the hard drive space on my Lenovo Yoga Tab 2, via an OTG cable, or with my traveling media player, so I can watch movies in hotel rooms on the TV or while camping.
Last time I bought from MyMemory before, the goods arrived in about 3 weeks.