Unless you get lucky and someone decides they want to buy it from you, I don't think anyone will take the time to email you.
If this computer is as you say, someone who has a real interest in antique computers and computer history would probably take it from you, but the item is so old that it isn't really having much use if it even still works. If you get lucky on ebay, pawn shop, or a flea market you may get up to $50 out of it, but in reality unless someone who really loves this stuff comes along you won't get that out of it. I would say you are more likely to get $10-20 out of it. Some people like me would love to have this thing, but because of limited storage space for such a big item, the very limited amount of use, a lot of people would pass on it. So good luck getting a buyer, just don't toss it if you don't find one, if you really can't find one donate it to a computer museum or something cause that things an antique.