1 - 500              6000 Gwei
501 - 1500             7500 Gwei
1501 - 3500   10000 Gwei
3501 - 6500   12500 Gwei
6501 - 8900   20000 Gwei
8901 - 9989   50000 Gwei
9990 - 9999   150000 Gwei
10000 - 10000   1000000 Gwei

6000 gwei is 0.00000600 eth its something around 6 satoshi. Rewards are very low, and if you roll number 10000 its some kind of jackpot with very low reward of 1M Gwei or 1100 satoshi.
I don't think people will come back to this faucet.