I've got an original first release of tetris (bundled with the gameboy) that is a gloptop. So seeing a gloptop doesn't necesarrily mean it's a pirate
I remember buying a pirate version of fire red through ebay just to use with PAL park on diamond. Just said cart not recognized and wiped the data on fire red Ever since then i've been sketchy with ebay to say the least
eBay is shady (most of the time) . My personal philosophy is that if a single cartridge is less than $15, it's fake.