At the $15 level the joke books are more adult (O'Brien and Fitzgerald Walk into a Bar: The World's Best Irish Jokes) and edgy (the "Extremely Gross Jokes" series).
And here's a joke for you. Our search threw up "The Joke" by Milan Kundera. Funny huh?
Then there is the fabulously interesting title g.i. jane 2 A Study in Humor and Jewish Identity" by Elliot Oring. Not a joke book to take to the pub perhaps but you can feel the laughter well up even so.
Then I came across the title "I Give you Texas! 500 Jokes of the Lone Star State". I have always had a yearning to live in Texas although I know very little about it. I reckon Texan jokes should tell me all I need to know. So I got sidetracked and ordered the book.

Of course there is a dark side to the joke industry - the academics who Take It All Very Seriously. Consider the title "Rationale of the Dirty Joke: An Analysis of Sexual Humor". This kind of title should not really be thrown out by a search for jokes. It's not fair and it's not funny.
At the top of the price range ($100 and more) there were interesting discoveries, such as an album of 50 saucy not blue postcards from World War II. My grandpa had some of those.
Published in Poland in 1931 was "I Laugh at You", in Yiddish, by Joseph Tunkel. Mr Tunkel left Poland in 1939 when the laughter stopped.
For $300 you can have David Henry Thoreau's "Cape Cod" in two volumes, reportedly Thoreau's sunniest, happiest book. It bubbles over with jokes, puns, tall tales, and genial good humor, the bookseller says.
If you are prepared to stump up $77 500 dollars for a laugh, you can have the complete autograph manuscript of Chapter 23 of "A Tramp Abroad" by Mark Twain. It was the most expensive that came up under the search term "jokes" on Abebooks.