[Matrixbeast]

It's a mix of multiple factors that many can make note of. While the item itself can raise and lower in price depending on the times, factors such as condition, if it's in box, if the box has been opened or not, whether it's complete, hell, even condition of the box, can all factor in on whether or not you have a hunk of cash on your hands.

Additionally, because they didn't make it to the states, you can expect a lot of Mecha from Jetman and earlier to go for more than post Zyu toys (However, you still can get a nice price on original Zyuranger, Dairanger, and Kakuranger mecha, since those had their original stickers replaced with the MMPR lightning bolts).

Being an older figure doesn't necessarily mean you'll get a huge payout, however.