Will it reliably do this for markets other than the US though? Not long ago it definitely didn't. I'll give it another try but I'm not getting my hopes up.
It’s built into Roku, although I’m not sure how well they do but outside the USA at this
Others have mentioned justwatch.com, but reelgood.com also does it.
I use trakt.tv; I think it had some coverage that justwatch lacked.