Impossible... we've already been over this.
If Kiteboarders don't make the IMPOSSIBLE, POSSIBLE then how did we get this far? With an attitude like that I wonder how you ever thought it possible to get upwind? Time for an attitude adjustment.
It's impossible. Materials cost more then 150 for a board, especially a decent one.
MAYBE you could get an OKAY board for 150... but you'd either have to order in MAJOR bulk or really skimp out on materials. (IE: instead of Corecell or even divinycell, using PU or XPS. Instead of the right amount of layers of Sglass, using few layers of Eglass. Etc.)
I mean shit, if it's possible, more power to you guys... but trust me, getting a decent board for 150 is in fact impossible.
Well... unless you knew herb Obrien that is.