I can't believe this. Here it is, almost six months to the day after your post, and I went to a Tuesday Morning that had just opened in my town. And, sure enough, there was the same combo pack that you described for $24.95.
I had been thinking of getting one because I definitely "wander" when I cut. The rotary cutter has an odd safety guard mechanism that feels clunky. I put a little graphite (dry, powdery door lock lubricant) into it and it seems to help a little. I may need to work it in before it works smoothly.
Tate