If you are a regular gambler here on the forum and see that the project holds a lot of simple and clear raffles and contests, I don't see any problems with making a deposit of 5 bucks... just so that the system recognizes you as a real player and not a bot.
I fully agree with Icopress, depositing just $5 bucks on whale isn't much and when it comes to reputation, we all know that whale has proven itself as a trust worthy platform. They offer many raffles, and many contests on this forum and $5 deposit on their site isn't a big risk at all.