Even though the original Playstation is one of the most common consoles of all time, there are many valuable PS1 treasures to be found. Its diverse library is filled with RPGs and unique gems that collectors long for. Out of all of the consoles we have covered in the Rare & Valuable series so far, the PS1 has both the most expensive regular issue game and the highest average selling price. This occurrence can can probably be attributed to the PS2 and PS3's backwards compatibility and its wide range of cult favorites that remain as exclusives for the PS1.