Just received my K701s - Amazon's 5-8 day free delivery arrived in a swift 2 days. LOL, my last pre-covid lockdown order took almost 2 weeks.
As far as these much lower priced phones being real or fake, everything about the packaging, paperwork and phones themselves looks quite authentic. All the numbers are in place - full ser # on box's outer surface and numerical portion on inner surface of LH headband. Small sticker on LH underside of leather headband states Made in China. The serial number format matches that supplied on AKG's site.
I emailed AKG requesting authentication. Before I do anything with these they'll sit in their stand atop my desk until AKG confirms authenticity - or not.
The only thing I did was to try them on. My first impression was WOW! These not only cover my ears, they swallow them! The headband holds the cups in a comfortable position, not pulling down on my ears. My ears are a bit larger than the average bear's, so that's something. If I can restrain myself from using Brylcreem or some other type of bear fat to hold my hair in place, these earpads may last for some time.
A note about packaging :
The display box is quite substantial. Although plastic rules the world these days (and this is molded plastic), my first impression was that of 1/4" plywood or particle board. Weighty, stiff and not very flexible. Could probably withstand the odd cinderblock attack.
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I also downloaded a nice PDF with full blowup of all service parts along with a parts list.