Bettacreek
Almost Self-Reliant
Lol. Those two are incredibly expensive. There are others that are super expensive as well, but I tend to avoid them. For EO's, you have to get the hang of them before deciding expenses... A lot of people don't like mint EO's because of the expense, but when you use them, you only use a fraction of the amount that you'd use for an FO, and the cost per USE is actually very similar.