The Grapes of Wrath? what's it worth?

Check Amazon.com Look for the ISBN it's usually on the inside of the book with the Library of Congress Catalog number or it can be on the back of the book if there's a barcode. Enter the ISBN and see what it's selling for. Keep in mind 1st Editions aren't quite as valuable as 1st PRINTINGS. It can be a 1st edition but the 20th printing.

it a worth of "sucess to his like"

Yes and be sure to check, "completed auctions" (in advanced search) on eBay. The ending price from the winning bidder is what counts. You might also try this on a specialized auction site dedicated to rare books. Good luck!