They aren't spamming, they're posting that because you didn't specify in the OP whether you're going to selling the account with the name or how you plan on transferring the name to the buyer.
Also, even though you're probably not gonna give a fuck about what I have to say, the name isn't nearly as rare as you think it is. You should just take the 50M, as that's already a more than generous offer, and stop constantly bumping this thread when it isn't gettin bids.