Its not available here, it is available on the worlds largest retail site, currently, quite often it isn't and yet its never anywhere near the top 12 selling CPU's, there are 9 left.
It's in stock at least 3 other large competitors - it's hardly a "fake product"
Edit:
Is it less available than the parts Intel would rather sell given their limited production capacity? Yes (in the same way AMD's capacity is constrained and there are hardly any parts cheaper than a 3600 available)