I grabbed mine on Aliexpress during 11.11 for 55€ aswell.

Recieved them today and they work perfectly, 100% original, with serial number and QC pass card. The card says 11 of August 2023.

Its a gamble if they die after 15 days (we got 15 days free returns on Spain after recieving a package) but so far so good.

I might mod them and add a strap headband to improve comfort but for 55€ its a bargain.

HE400SE (non-stealth version) for 55€ on AE.