I love this tool. It is cheap and reliable. Started using it last year as a supplement for other more expensive tools. Especially good for those complex basket lines that come and go in a volatile market before a match. I haven't seen any niches yet such as rugby, table tennis, cricket - if it is not included it would be greatly appreciated if the developer could do that.
The tool is just an early indication of value. Obviously, there are numerous other factors that need to be looked through before wagering you money.