From what I've observed in searches, it can be worth anywhere from $2,200 to $6000 US currently.
priceless, and you can expect the price to increase once King dies.
Kings' first published novel was Carrie.
William II (Rufus) Henry I Stephen
Carrie
"Under the Dome" by Stephen King has 1,074 pages in its hardcover edition.
Stephen King's novel "It" was originally published by Viking Press in 1986. The following year it was published in mass market paperback by Penguin Group Incorporated.
Edwin
1,090
"Duma Key"
Tim Curry.
2009
Tim Curry as Pennywise/It.