Did you know the HP calculator division was at one point based in Australia?
I have an Aussie designed HP49G in front of me right now running HP50G firmware. I have another 4 or 5 spare ones. I used to have more, but I gave them away.
There is a chance to pick them up super cheap as they had a huge problem with an electrolytic cap inside that leaked stopping the calculator start. Replace the capacitor, and you have a fully working HP49G! I got HP49G 8 calculators for something like $40. The early models had unuseable keyboards and unreadable displays until you removed the protective plastic cover, but luckily, I think most of the ones with the capacitor problem are later models.
Definitely not the same build quality as the earlier injection molded key calculators, but it is still my most often used calculator.