Whats the point of buy it ?
According to my views they think that these bots are beneficial and perfect to compete the software of dice and they will know that how to play according to the decision of the dice. But I do not believe on it because the bot do not have mind and it is believed that playing dice also require a mind up to some level.
I have never bought any bots but earlier in the first version of primedice I had a friend who gave me some code which we had to enter in the console and it was very nice indeed considering that time not many bots were there. These bots are good because you can apply almost any strategy and see how the outcome is.
Though sometimes we get carried away by these bots and forget that at the end of that day its the house edge that kills not the methods.