I'm getting ready to pull the trigger on RightStart level b for DS4.5. It will be my first big homeschooling purchase, so it makes me a little nervous. I see that it's still pretty pricey to go from one level to the next.
I'm curious as to how quickly your child progressed through this curriculum. Looking at the things that the levels cover, it seems that in B there's some stuff he already knows. There's also some things in level C that he already is starting to understand. But I do think that B is the right place to start. I'd just like to have an idea of when I'll need to make a new purchase...