@J**
I'm on similar deal I think, 100GB data @15Mbps. I used replace the SIM card annually but 3-4 years ago they gave me the option to renew it, you might not have to actually replace the SIM. In my case it's 1,940 which I think is a grandfathered price, it's around 2,200 new I think. I just have to make sure I have 1,940 in it at the start of the year when it expires and it renews for another year. You can transfer credit between numbers as well, so if I had excess credit in my voice SIM I can transfer that to the data one to pay for the next year.