I had these lying around the house from when I was younger, but have no idea what their value is. Mantis Xeno has the most wear and tear and Crystal Jouster has a very slight bend on it's top right side.



PS: I also have a bunch of other cards but those seemed the most valuable ones. I also have a lot of puzzle cards if anyone is interested.

Generally Spanish cards especially popular ones like Dual Fang are not the easiest to come by however yours are sadly in very bad shape and Great Horn unfortunately is junk value so I doubt you will be able to get much out off them.

Crystal Jouster definitely is the best one here, even if has some usage on it. It is hard to tell from those pictures how bad its border damage is, as long as it doesn't have any creases you'll probably get that one sold at least.

How much would you value them each? I don't know where to base my selling prices off.