Bumping threads is actually encouraged here, so please don't give it another thought.
Local nurseries in our area always have a good variety of mints to choose from. The Farmer's Daughter is one of them. They are in Auburn and literally 5 minutes off the Mass Pike, if you feel like taking a drive in the spring.
http://thefarmersdaughterauburn.com/default.aspx
Or, you can drive another 20 minutes south and help yourself to some of mine.