These are very easy things to calculate for having better results from this site which is doing very good wasting your RP for Fun tokens is never been good idea just accumulate them and then cash into bitcoin which is really better option and having more profit because with this you can buy more FUN tokens instead of going into this way. I already have once this 100K SATs and now going for this second time which is really great profit for me from this site.
It can be a good idea if the FUN tokens go up a lot in price. I also don't do it as I rather convert my RP to satoshis but it takes quite a while (even with 6 WOF spins) to reach the 100,000 RP mark. Having 0 referrals also doesn't help lol.