Looking to see if anyone knows a ball park price for this display card. It folds up into a triangle and is the same design on both sides and has some advhesive and instructions on the bottom. 

I think $300 is tops. IMO. Could see it sell pretty quick for $125. IMO

I have a Wario Land II one that I also value around $300. I agree in the $100-$150 range it should sell quick, otherwise a higher ask will sit awhile but they're so rare they would command a premium.