Super buy Tom! Where did you find them?
I saw them at the "Greater Nashua Stamp Show" in New Hampshire.
There was a price of $3 marked, which seemed so low I figured it referred to some singles that he already sold.
I was guessing he would want $30 for the sheet of ten, so I was going to try to get them for $25.
When I asked the price for the sheet, he said "$3".
So I paid him quickly without dickering.