Man, gamestop trade in values are a bit absurd! (ps4 games)

[BloodyRain]

kolbykooz said:
22 for Knack -.- a few months ago I got more for Pokemon Black!

Ya, whats is with these values! I was expecting atleast $40 for a game thats 3 weeks old or at worst 35, but 24! Just looked up the value at best buy, it's $40 there.