NordVPN is doing 75% off + 60% cashback from Quidco which takes it to £32 for 3 years. That works out less than £1 a month.
However, will that mean I can watch US Netflix?
It works for me with their browser extension set to US in that I can see the US content and play it. However the last time I tried accessing Netflix (either UK or US) on my Nvidia Shield TV with Nord they were blocking my access. I've tried with their own app as well as OpenVPN with one of their config files.
They do dedicated IPs and other specialist servers depending on your needs like P2P.
Even if you go through quidco I'd imagine you're still eligible for a refund if you're not happy with their service.