99.9999% of the "benz parts" sellers on facebook/instagram are scammers. The benz parts buy/sell groups are filled with 99.9999% bots that are trying to scam you. If you ever make a post asking if anyone has a certain part, no matter how rare and hard to find the part is, you will immediately get dozens of replies saying they have it and to dm them and sending you "proof" that they have the part using stolen images of it. Then when you dm them they will say their paypal is having technical issues so they can only take payment through e-transfer to their bank. Famous last words.