I'm quite enjoying my Amazon HD trial having had a few days to explore and understand a bit better - sound quality wise it's excellent & I can't reliably distinguish any difference against Tidal/Qobuz and of course there's no MQA to worry about which really doesn't interest me.
Here in France the ongoing cost of subscription (after 3 months) is 10 euros a month or the option of an annual payment of 100 euros - which roughly converts to £7.50 a month.
I do wonder whether Tidal & Qobuz, in the long term, are going to be able to compete with that - more likely (imo) a straight fight between Amazon & Spotify (if and when they finally go lossless).