I love Happy Fish!! I have two. Joey the price of Chopard depends on the amt. of diamonds, workmanship and exclusivity of the piece. I believe Happy Fish (rubber strap) start at $4000 but you can get some nice pre-loved ones on Ebay and jomashop in the 2k range. Costco also carries a few.
http://www.jomashop.com/happy-beach.html