If you’re playing for free in demo mode, then sure, why not. However, if you’re talking about real money gambling, then our pro tip is that the Ante Bet feature just below the Buy option is the probably better deal.
The Buy feature costs 100x your bet size, while the Bet feature costs just 5x more. The former does get you directly into the bonus round, while the latter does not. But since the Bet feature doubles your chances to win a feature, there’s a pretty good chance that you’ll make it in before playing through the cost of the Bonus Buy option.