Private Polish medical clinics in the UK - competitive prices apparently

Someone was telling me that he went to a private Polish clinic in London and that the prices were very good.

This clinic is £90 quid a pop for foreign-trained doctors who may or may not have been making a go of it in their own country whereas the last time I saw a Senior Consultant at a very long-established and well-known private hospital in the UK it was £70.

I assume £70-£90 would be just a start / consultation fee. What would matter more the total cost of a treatment. If it's cheap in London, it's cheaper in Poland if you want to go the private route.