What size do you wear?
I know that Thirft stores can be a great place to find other brands. I was at Saver's on Lake street, and got some Molicare Supers there, they had about 20 packs of Tranquility Large on the shelf for about $5/pack.
Also, Handi Medical in St Paul carries Tena products, and Merwin Medical carries Attends, although they are really expensive there.