I wouldn't be surprised if the FUN price in BTC equivalent dropped to 1 sat or even lower soon. And I wonder how freebitcoin will display the price in the buy/sell section in that case. If the situation with the spread will not change, then in this case, you could buy a FUN token for 1 sat, but selling it would only give you 0 sat, i.e. users get nothing.

That seems to be the clear long-term trend. There have been some spikes in this process, which seem to give encouragement to the token holders, but it all looks like it's going to end as you say. I remember buying some FUN tokens when FBI backed them and selling them after a few months. What a mess I got out of.
You're one of the few lucky ones. Most of us got charmed by the WoF. I mean, not gonna lie, WoF was awesome when it first came out. I checked my email daily to get a new free spin. I mean, who doesn't want a rolex, right? And then when they introduced the premium free spins and stacked the unused ones, oh my. I would wait for weeks, and then rolled few hundred spins at a time. It was both exciting and dissapointing at the same time