It's not an easy thing to be able to get a freeroll prize at $ 20 or $200 even though it's not impossible, the biggest prize I've ever gotten is around thousands of satoshi or when I get the number 9994-9997, above that I really hope to be able to reach it but also its really hard, done 21K freerolls so far and got around 17mBTC, but that's because starting when the faucet rewards are still around hundreds of satoshi at the lowest number so remember to get automatic withdrawals every week and it's hard for now, especially for players who have no active gambling activity on freebitcoin.
Now is a Promotional Reward Point with 4x bigger RP prizes. It's interesting to also multiply btc because the prize for every 500 satoshi bet is also bigger than normal.