According to a recent edition of The Chip Rack, there are only 20 chip that have been issued in Nevada in the Wave mold. Here are two that are on eBay right now, and as I write this the bid is less than $2.00 on each of them. Several other nice chips have low bids too.

http://www.ebay.com/sch/cottonchipper/m.html?item=230987180704&ssPageName=STRK%3AMESELX%3AIT&rt=nc&_trksid=p2047675.l2562