I usually start with Cardmarket for the European market and then check eBay sold listings for a realistic picture
On the image, you can see the glare on the righthand card a byproduct of the glossy card stock
Golurk can be obtained from Mega Rising: Mega Blaziken pack in the Mega Rising set
In reality, the value of Pokmon cards depends on several factors such as rarity, condition, edition and professional grading
Counterfeit cards may also have abnormally fragile surfaces, slick textures on the back, and a thicker or rougher texture than expected
When GameStop started doing it, it was without providing the staff with the necessary training and expertise, and naturally saw them paying woefully low prices, and of course without any of the individual stores having any independence over how it was carried out