Looks like the shaving community is on to him. He's added this to the page,
"On 12-Mar-17 at 06:41:34 GMT, seller added the following information:
"I'm informed by the shaving community in the US that this particular head may have been poorly manufactured - hence the mild side and slightly more aggressive side to the razor head - this was not a feature of the original model - I cannot edit the title of the auction though - but I am getting a lot of information that Tradere razors were supposed to have the same aggressiveness on each side of the head."
"On 12-Mar-17 at 06:41:34 GMT, seller added the following information:
"I'm informed by the shaving community in the US that this particular head may have been poorly manufactured - hence the mild side and slightly more aggressive side to the razor head - this was not a feature of the original model - I cannot edit the title of the auction though - but I am getting a lot of information that Tradere razors were supposed to have the same aggressiveness on each side of the head."