It didn’t make much difference for me personally, not long term anyway. I had one lot and was told I’d need a top up after about 2 weeks, but the lady went on holiday so I didn’t have it until 3 weeks. I don’t know how much difference that made to anything, she said it wouldn’t have mattered too much and that it would still work. I noticed a bit of a difference for about 3 months, it didn’t stop me sweating completely but it was a little bit less. But that was all, since then it’s been as bad as it was before.
I didn’t get it on the NHS either, I paid for it. It cost me £390 which is why I haven’t tried it again since, it’s too much money for me to justify when it didn’t work!
I’ve never heard or Miradry though, I didn’t know something like that existed! £1500 is a lot but if it stops it permanently it sounds like it would be worth it.