In my opinion an undisclosed problem is the sellers fault and they should pay for shipping both ways. If I simply don't like it or change my mind, return shipping is on me.
It's one of my favorites for sure! But yes it can be hard to light, could bite if not respected... but in my opinion has a flavor that is worth all the trouble.
I take brakes with all my habits(smoking, alcohol, coffee) just to make sure there not addictions. Every year I take a week or two off. I happen to be taking this week with no coffee. Best part of this sadistic act is how good that first cup will be.