He obviously meant satoshis, not BTC, but I think you know that.

What caught my attention though is that you are getting 600 sats per free roll. How is that possible? I mean, I know that you can redeem 3,200 RP to have 1000% bonus on minimum free FREE BTC reward for 24 hours after redemption, but that would be 352 sats (32+320) as of now, not 600 sats. Am I missing something or you were joking about that too?
It's the multiply BTC bonus as displayed on the free BTC page.