Bar81
Member
Silvergun has been $150+ for at least 10 years. Any value decrease would have come via inflation. The 360 port had little if any effect. Guardian Heroes is another 360 port that didn't really effect the value of the original. Which is strange, because the 360 version is unequivocally superior.
Part of it is also these ports aren't physical so you lose the game when the system croaks and the servers are shut down.