@oldjeep -> gong (french brand) foils are €399 (for the foil) , €799 Foil + Board
Foils are tons on fun , and an amazing toy to workout , as mentioned before no need for a big wakeboat , any ProStar 190 or Nautique 200 will do , even a small boat with 9hp outboard would do , actually you don't even need a boat if you are fit enough ;-)
https://www.facebook.com/100014525910246/videos/509235799570613/