There is such a range of pricing, and it depends a lot on the area where you live, the style of quilts you make, etc.
I'd suggest that you take a look at Etsy.com (online site for selling crafts and handmades) and see what kind of range of prices you see on items that are comparable to your own.
It's also a really good idea to track realistically how much the materials for each item came to, and a rough idea of your time expended -- you have to make a profit, and I notice a lot of beginners severely underestimate how much their materials come to.