It's $500 (ok, it's not technically his but it's on his site). It provides a service that I want: grouping of IV by percentiles. So, if IV on an option today is 20%, the program will tell me what percentile it is in based on past IV (100 days, 1 year, whatever). Anyone here know if any brokers offer this feature as part of their package? $500 is a bit steep.