So something strange happened to me just yesterday. I usually sell some of the toys I don't want anymore on sites like eBay and Mercari, and sites like those usually give buyers and sellers a chance to talk privately about whatever's for sale. Yesterday afternoon, I got a message from a certain "dygijuoiof" on Mercari with a phone number asking me to text him. The account was terminated shortly after and message was consequently unavailable on the website (presumably because Mercari's code of conduct prohibits sharing private information or outside business), but I still had a copy of the message in an email notification and decided to text the number. To my surprise, he responded, mentioning both his name and the name of the item so to prove that he wasn't some sort of bot. Interestingly enough, he was offering an additional $50 more than the listing price so long as I immediately remove the online listing so nobody else can buy it. Something I found alarming though was that he wanted my name and address. Asking him why, he said he intended to pay by mailing a check instead, followed by sending a mover to pick up the package personally. I was confused as to why he wanted to do all this rather than just buy the item directly, so he answered that he received the check from his job as congrats for getting newly wed, and he offered such a high price to make sure none of the other watchers could buy it before he did. Reluctantly, I agreed to the deal, removed the listing, and packed everything up in preparation for the mover. I'm aware that there does exist some form of scam check that ruins your bank account when deposited, so if and when I receive his check, I'll be sure to take it to the bank and to have it verified before I throw it into my account. Have any of you had a similar transaction like this? Would it be risky for me to go along with this? Is there anything else I should be worried about in case if this is a scam? If it is one, what could this person do to me with the check and the information I gave him? And what else can I do to make sure that this is safe? Any sort of input on this situation would seriously help out an inexperienced seller like me. If you've read this far into this post, thank you!