Pokemon Silver [Not for Resale] value

The catalog shows two different versions of Pokemon Silver. The Pokemon Silver [Not for Resale] — Game Boy Color version has a used value of $487.50 [1]. The Pokemon SoulSilver Version [Not For Resale] — Nintendo DS version has a used value of $161.93 [2]. The value difference is largely due to the different gaming platforms (Game Boy Color vs. Nintendo DS) and the specific version of the game.