If you consider 10-day, 20-day and 40-day Donchian channel breakouts as 3 "different" systems, then yes, this book offers ~80 "different" systems. What peeved me was the fact that there were only 30 or so unique systems in the book. The other 50 were variations on the same theme. Half the book deals with various sorts of funky moving averages... not interesting, and not very useful. Also, the readability is extremely poor. It's a good buy at $15, but definitely not worth $50.