. Everyone bought them when the price went up.<<<
I am out of date on the stamps, I knew these existed, but still have many to use up on hand, are they still for sale?
If they are not still for sale, then he may have been here a while.
I presume they're still for sale. Information about the "forever stamps" can be found by CLICKING HERE. They are called "forever stamps" because they can be used "forever" as postage for a first class letter -- even if the price of a first class stamp goes up. So, people bought stacks of books of these stamps.
They went on sale on May 12. I would guess that they will remain available for at least through the end of the year.