To be honest I think you will have to wait for a long time before being able to buy FUN tokens at a lower price than nowadays. In the email they've sent today, their Last Week in Crypto newsletter, they confirm they are about to introduce their token burning program before the end of the current quarter.
FUN Token to Introduce a Token Burning Program Soon
[...]
On 25th May, FUN Token took to Twitter to confirm their plans for a token burning program to be introduced this quarter. A decentralized casino on the Ethereum mainnet is set to be launched soon, and the token burning program would be linked to the profits earned through any gaming operations launched by the organization. Further details coming soon, so stay tuned!
There are only 30 days remaining in the quarter so I expect some big announcements are right around the corner. We should get some clarity real soon. Everyone is eagerly anticipating the new casino launch. The old development team failed to live up to the hype but with Freebitco.in in charge hopefully it will be a different story.