I did not use that many wof spins maybe 400 or 500 so not much inflation there so far, but where did you get that information with that one in 20k chance? Is it given on the site anywhere?
You can figure out the odds from the provably fair formula. Whenever you click the roll button you are creating a decimal between 0 and 10000. This decimal is either rounded up or down to give you your final result. Since 10000 is the highest decimal you can roll there is nothing that can get rounded down to 10000, therefore rolling 10000 has half the odds as rolling a result that is between 1 and 9999.
Thank you very much, the truth is that I have never done the calculation of the probability, but seeing that the possibility is so low, it is better sometimes not to think about the numbers and in this case give in to the possibility of having a touch of luck and maybe gain. I say this because freebitco.in has done relatively well for me, since I've been on the platform around 2017 when the faucet was booming, which sometimes gave between 1000-2500 satoshis, nothing else with that and one could multiplying the money, and apart from the option that the more you bet, the more the roll gave, because that was more exciting.
The contests they have now are very big, and now with sports betting they have more options, this is really one of the sites that people are more likely to win.