CeX pays £18 voucher back, so nothing to lose here (almost). I think this is the cheapest it has ever been (new copy) and they might be just clearing the stock as the new one was out last week.
Also £17.01 from Boomerang (As-new) if you don't mind ex-rental copies:http://www.boomerangrentals.co.uk/game-rental-details/rent-sword-art-online-lost-song-ps4/g250pa4
Taking place in the brand new world of ALFheim, take to the air with its aerial combat system, explore a new original story set against all new environments, with new quests and characters based on this incredible popular anime series.
Take flight alongside Kirito, Asuna, Leafa and Sinon as they set out on their next grand adventure!
- An original story based on ALFheim Online game coming with new and much loved existing characters, environments and quests. The story spans around 50 hours.
- Strategic Gameplay
- Partner with two other well-known and much loved characters to strategically attack enemies.
- Aerial Battle
- Experience 360 battles in the air with seamless transitions from ground to flight.
- Various weapons
- 10 different kinds of weapons are available and offer the player new and strategic ways of defeating enemies.