I always pay monthly for a vpn, mainly because when netflix or the beeb etc play whack a mole with vpn providers, it is worth switching between them.
VPN’s have traditionally been a commodity where if you get an incredible deal, then you are the product being sold rather than the service buyer.
The beeb haven’t had a vpn crusade for a while, although they rarely have anything on that entices me in more than once a month, so it couold happen without me noticing. My main use of a VPN is to see whats on other netflix regions, but as they are moving more and more to produce their own stuff rather than buy in, the differences are becoming less. So VPN’s are becoming less useful, probably should cancel mine now.