For me, though I started playing the wheel of fortune spin not a very long time ago, I actually have never won anything above 30 Satoshis from WOF, I usually won or win either 30 Satoshis or 32 reward points. This has made me believe that winning any prize that is greater than this is simply based on a user activity on the site, this i say because, ive been a while since I invested a dime on the site, like I believe I have said here before, I currently hold a small amount of fun token but not on the site, I personally assume that this is the reason why I am not getting any reward about 30 sats or 32 reward points.
And for what you said last about investing $100 in fun token and then getting reward worth $100 in return, you sure know that things like this are easier said than done, but all the same, still depends on how lucky a user is.
I did manage to get more a few times so far, I mean yes commonly you get those, but I have been doing it for over a year now and I have won different prizes multiple times, not just one or two, and I can say that its possible. However, people don't really do it for getting bigger, they are doing it for the "possibility" and that's the important thing. Can you possibly get a rolex from this? I mean I would get the money not the rolex but like is it possible for that to happen? Yes, then that's why we do it. Plus that 30 satoshi stuff matters too, when you combine it all together that mounts to something eventually.
This is not really a terrible situation, you could just gather more and more every single day. A person who has investment at fun token, could not only earn a lot during bull run when fun tokens goes up, but they could make a lot from the satoshi rewards all the time every single day and that will make sure that you earn a good chunk eventually.