The Hyperlite Evolve was a great shape for the time but unless there's a super sentimental attachment to the board its not really worth tracking one down, technology and shaping has come such a long way since 1999 (and the board was actually first released in 1997, that's 15 years ago).
There are a lot more user friendly and fun boards on the market now that you could get for a great price.
but if you really want one:
http://www.ebay.com/itm/160831292850...#ht_500wt_1196