Unique patterns
It is so fun to whip out a pattern and know you don't need to alter. Of course, it depends on how accurate your measurements are to begin with. It's been 8 years ago that I signed up, and I've gained so much weight since that I can no longer use the patterns. The choices aren't as limited now as when I started, with the McCalls and Butterick choices available.
Because I'm short and fat it was worth the cost. I'm hoping I'll enjoy garment sewing more after surgery when I get closer to goal.
Best wishes--
Ila