People really do send silly messages all the time. I even get lowballs for $6 items with no Best Offer,

I once received a message for an item which I have sold over 160 of in 1.5 years. The price was $100, no Best Offer and Brand New in Item Conditon, the message was "I am willing to give you $35 for this item if you can guarantee that it is brand new and will work in my house."

Such messages do not merit a reply. There are others who send messages with offers and saying that they can buy the items from such and such for half the price. I even have had a couple of buyers who actually bought the items, then said they could get them cheaper down the road and demanded a discount (after they have received the items, of course).

The point is, people will try anything to save a buck because all sellers are obviously millionaires, right?  

In this business we've got to be thick-skinned. I'd be long in a straight jacket if I take everything to heart.