Yes, you can get Armour from South of The Border. They also have the generic which is cheaper.
I am not sure about the quality of it. Would have to know someone that has been on it to make sure how good it is. I wouldn't want to be the ginny pig first if you know what I mean.
There was a big discussion about coconut oil here about 1 1/2 years ago. The majority of people who tried it had no improvement in their thyroid function.