Nevada publishes the average edge for slot machines, e.g. http://gaming.nv.gov/modules/showdocument.aspx?documentid=7618 http://gaming.nv.gov/modules/showdocume

Nevada publishes the average edge for slot machines, e.g. http://gaming.nv.gov/modules/showdocument.aspx?documentid=7618 http://gaming.nv.gov/modules/showdocument.aspx?documentid=76... (Look on page six, where it breaks down the 'win percent', or the house edge, by the stake size)