I logged in and found that for the month of April, all of the Superior Threads So Fine! #50 threads are on sale for basically 50% off. Hot Dog! There are a select group of Superior Threads - certain colors of Masterpiece, Omni, and King Tut - which are on sale year round as well.
Anyway, I went strolling through their website and picked out a whole handful of colors. I went crazy! I got 14 cones of thread for $111. And then I called up and got some of the Masterpiece for piecing as well. What a deal! My membership definitely just paid for itself.