What's that casinos actual monthly revenue? If you could answer that, you could answer how much is being bought and being burned.
A big casino with big business and good profit will be able to assign part of their profit for buy back and burn program. They need to have good profit, then make decision to assign some percent of profit for this program. Big or small fund for buy back and burn program mainly depends on their business income and profit.
If Shuffle can provide their users information, like you are discussing, on their user dashboard, it will be very helpful. I don't know Shuffle team have this information for users to access publicly with their accounts and dashboards or only release this information in regular report like weekly, monthly or quarterly.
The best is allow user to have it anytime, permissionless through a dash board. If they don't have it at the moment, they can consider to build it.