No worries! you don't need to risk a whole $1000. You just need to wager such amount, and it's pretty possible to hit it even at small depos if you play games like low risk plinko or Mines—like 1 mine or smth.
That's very good, because there are people who don't have the money to bet a lot, I also think it's a lot, but when compared to 1 BTC it's really nothing, the offer is very good and I think it's a great temptation for those who have 1000usd, but if it is granular until reaching 1000usd it's not bad at all, but for how long is it valid? betting in a granular way, in 20, 30 until reaching 1000usd is the best.