@Milly21 I think that you need to sit down and think about why you're considering it now. It's expensive so you need to know what you're getting in to. Maybe write down a list of reasons why private cover would be good for you. Then do some research on what the different funds offer that are important to you, the costs, benefits paid, and the waiting period (don't make assumptions with this). I was close to opting out of my private cover when I was diagnosed - I have had health cover since I started full-time work so that was 36 years at the time and most of them with the same fund (I'm with Health Partners and I have on occasion gone back and checked that it was still the right one for me and my family). I doubt that I have come anywhere near recouping the costs over the years but this year, I have had a damn good go at it! Given that I'm now getting to that age, it seems, when things begin to go wrong, I will try to stay with the health fund although paying the premiums is tough. But would I join now, after treatment, if I wasn't already a member - I don't know... I would have to do some serious cost-benefit analysis given the price of premiums.
I should also say that, while it could be that I've just been lucky, I have never had any issue with claiming anything from Health Partners in more than 25 years - my family and I also use their clinics for dental and optical.