You'll get dozens of "it's not worth it" replies, but I sell my quilts. I charge roughly 3x material cost of the quilt top.
I charge £40-45 for table runners
£70-80 for baby 32" sq quilts
£150 for small throws
£220+ on larger sizes.
Bear in mind I make smaller than average US sizes as in the UK smaller sizes sell better. Our tables aren't as long either so my table runners are about 35" in length for example.