Demand for Kobe Bryant memorabilia is surging like crazy in the wake of his death — with collectors paying INSANE prices to scoop up valuable items, TMZ Sports has learned. But, with the high demand comes scam artists looking to push fakes … and the market is already on high alert. We spoke with multiple high-end collectible dealers who are all saying the same thing … people are clamoring for anything Kobe … and they’re paying anywhere from 2x to 20x the price Kobe stuff was fetching before his death.