£4.99 here if you have no stock in your local area... https://www.go2games.com/deus-ex-mankind-divided-day-one-edition-ps4
£5 in Cex as well if anyone has vouchers to use up...
To be fair, you're paying for their streaming service, which costs Sony to run. At £2.79 per month (if you go through the CD Keys promotion for 15 months), it's really not bad money considering you get new games to your collection each month. You also get reasonably good discounts for buying games too through their membership, which you can play after the subscription ends. I don't think it's fair to expect to subscribe for a few months, end your subscription and still be able to play the free games within those subscribed months indefinitely, otherwise it would make it a really bad business model from Sony's perspective. If you compare it to other gaming services, like NVidia's, I feel that it offers pretty good value for money, even if there's only one game a month that you like.
They offer free games monthly which you can only access with a valid PSN+ sub. However, you can separately purchase games if that's what you'd prefer. Hardly a bad deal
God remember the days were edios made great games haven't seen them on any consoles artwork for games for a canny few years now. Think at one point they even made rayman games