Now I'm on a roll, so watch out!
Something else to keep in mind:
If you make and sell one quilt for $800 in a six month period. How many lap quilts would you have to make and sell at $40 a piece to make the same amount?
20!
So don't sweat the small sales. Make it worth your time. If that $800 quilt is 4 times bigger than one lap quilt and takes you 4 times longer to make, your profit is HUGE in comparison. Get it? The price is 20 times higher!
I listen to people endlessly discuss what $5 items they can produce and sell at craft fairs and I wonder why they bother when they are only make $1 on each item. It's OK to have less sales at higher profits. Wouldn't it be better to sit all day and sell 10 items at $25 each rather than 50 at $5?