The actual 55X headphones were like $40 on discount on amazon.ca when I bought them. Resources used to make the pads must be really low level material but understandably so like all headphones at that price. No point in making knockoffs imo but chinese dealers are legendary for making knockoffs of anything on earth lol so wouldn't be surprising.
If yours look like the ones here (right click and open in new tab for high res) and not any worse it's probably the real thing (pads with the red on the inside):
But I didn't find them cheaply made honestly. Only thing I didn't like is my ears being still too close to the drivers on the SZ2000.