I will buy a ticket soon, once the order of numbers left is 1-25
At that point the probability of winning will be:
23! divided by 25!
which is equal to 1/25*24*23
I don't have my calculator but that seems fairly good odds vs. a possible winning of over 20k fg (taking into account the average growth rate of the pot currently)
I think it is a superb feature. The only draw back is that many of us are likely to develop gambling addictions