Looking for the price and location of a very good or fine condition, First edition of The Illustrated Man and Farenheit 451?

Your best bet is to do a search on the Advanced Book Exchange (ABE). If you are looking for true hardcover firsts, the publisher was Doubleday for THE ILLUSTRATED MAN and Ballantine for FAHRENHEIT 451. Be forewarned: the hardcover first editions of these two books are very expensive. Here is a link to ABE:

http://www.abebooks.com