I got 2/3 of my current gen library for 15€ or even less than that (none of them pre-owned).
Destiny 10€
Alien Isolation 12€
Watch Dogs Complete 15€
Wolfenstein The New Order 6€
Wolfenstein Old Blood 6€
GTA V 17€
Halo MCC 17€
Dead Rising 3 13€
Sunset Overdrive 13€
and now Sony expects that people buy most of these PS2 games for 15€? People should rather support current gen games.