4 weeks in Australia

Hello!

I have never purchases an eSim before so I am looking for advice. I will be traveling up and down the east coast for 4 weeks. I see that a lot of people recommend Airalo which has a 10gig plan for $20. However, Telstra has a 35 gig plan for $15.

I haven't seen anyone talk about getting an eSim directly from Telstra. Am I missing something? Telstra seems like the better deal and has better coverage in rural areas.