What’s the average mortgage sitting at these days?

We bought our house in 2020, and our mortgage is currently around $810K. It’s a challenge to pay off principal vs interest at current rates but manageable with our incomes. I recently read an article that said mortgages over $600K are considered ‘very big’ which surprised me - though maybe that’s accurate?

Would it be fair to assume that most people wouldn’t have a mortgage over $1-1.5M, since servicing that would be extremely difficult unless they’re on very high salaries? And for those buying properties over $1.5M, are they typically using cash/savings to cover the balance rather than taking on even larger mortgages?

Edit: Auckland based, fringe/inner suburb.