I would argue that Chrono Trigger has not declined in price, rather held rather steady and only slowly increased to the extent it's not worth going up in arms about. I think it being re-released twice over now has simply made demand not spike. The prices loose Super carts goes for is about ~60% more expensive over a 6 year period - again it's up but not as drastically to cause a ruckus. The fact in many ways the Super version is still preferred lends itself to still being in demand.