I was looking at some of them. One I liked was $25, plus the patterns were $9.50 each.
http://store.boutique4quilters.com/s...3&Item_ID=1274
If I knew for sure I'd make several quilts, I'd consider it. But I hate to spend that kind of money and not enjoy the process and have the ruler sit there unused forever. You could see if any of your local quilting pals are interested and share the expense.
It's amazing how many different rulers are available.