We use Armour thyroid almost exclusively. I take it myself.
I am thoroughly convinced that, for at least 70% of people requiring thyroid replacement, the added T3 component makes a world of difference compared to isolated T4: More energy, greater alertness, better mental clarity, better weight loss, larger effects on lipoprotein(a).
However, there are substantial price disparities in different pharmacies.
For instance, in Milwaukee, a one month supply of 1 grain (60 mg) tablets costs:
Walgreen's: $36.00
Walmart: $9.54
That's a considerable price difference of nearly 400%. It therefore always pays to do a little bit of shopping.