Perhaps the price is worth it for you. It’s not for me. Even with a 20% discount, it’s close to $70/year. When they had the sponsored actions, which allowed 60 actions a month, it was worth it. But now they’ve killed free actions altogether.
As for functionality, the fact that it (unlike MailHub) will not connect with Apple Reminders makes the Task feature useless to me.
On the other hand, if I was a business user and the money was worth it to me, the Snooze function is useful for, say, shipping notifications, so it will pop back up so that I can see if the item arrived on time, and I still use the (still free) sending-delay function, so that I have an “undo” function if I mistakenly send the wrong thing to the wrong person.