Working in the market that I do I can honestly say that if Watercone is changing $30-50 per unit and are marketing it as a "help the 3rd world" type company they are raping people. There is probably less than $2 in cost there. Add in another $2 in labor and machine time and you have $4 or less total cost. We have large injected molded plastic parts made for us and they cost very little. We Vac. Form even larger parts as well. I guess everyone has to make a buck.