No this isn’t allowed, for multiple reasons. First, you’re not allowed to allow someone else to gamble on your account, it’s in the terms and conditions of your casino account. Second, you can only use payment methods in your own name on your casino account, or else withdrawals could be voided, so you enter into a scenario where the person who would buy this would have to transfer you money and trust that you would deposit it, that you wouldn’t change the password to the account at any point, and also that you would give them the withdrawn money if or when it would arrive.
Finally, 30 bees or no bees, there is no advantage in a wild swarm. Each spin is random and each bee that lands in spin gives the same odds of swarm mode triggering, so 30 bees already having landed doesn’t add any value to it.
I’m torn between leaving this up and hiding it, but unfortunately by the time I saw this 11 people had already viewed it so I’m leaving it with this response to be clear - no one should be selling a swarm, and no one should be buying one (or playing on someone else’s account at all).