we all start small-then it explodes as we see fabric we can't live without. Toys,er,tools-that make cutting, measuring easier-machines that are cute or have to have because.......fill in the blank.
Quilting is an addiction that we all enjoy-some times more than others, depending on how our current project is going!
I would say that the estimate of $100-$150 is about right. And I know the kits are expensive but you are paying for the cutting and sizing. I would start with something small-but if you are like the rest of us-the projects grow!