Scott (the seller of the letter books in this thread), is the guy who sold all the manuscripts on eBay in 2000/2001. He sold over a thousand of them for as low as $65 to around $400 for the top-shelf older stuff. Those of you who were around for that no doubt remember those wonderful days.
Well, after I won one particular manuscript from him he sent me an email along the lines of; "As I was getting this ready to ship the manuscript I noticed that it is not a carbon but an original typescript. I didn't even know I had any originals, so you got a good deal!"
Not, "Hey, I just noticed this is worth about ten times what you paid for it, so no deal, baby! I'm relisting it tomorrow," which is kind of what I was expecting after I read the first sentence.
Another time I mistakenly bid way too much for a third printing of Me And Your Sometimes Love Poems, thinking it was a first edition. After I won he said, "That's way too much for this book, I'll refund all but $30, that's a fair price."
So he'll always be okay in my book.