We're looking for a basic waterfall like this: http://www.interfab.com/getattachment/3 ... /Taos.aspx

I'm not interested in all of the precision cutting that is required to get this to fit my radius pool. What would it run to have someone make a waterfall out of river rock? These pre-fabs run around $1,000. Would it be more or less to have one made? Any suggestions?