The size of the quilt is a good indication of the amount of yardage in the kit. If I like the fabric choice and pattern that is all I need to know if it is a good buy for me. I buy some kits at clearance prices and that brings down the price of a kit I buy that is retail price or (raises the price of the clearance kits if you think that way). It all equals out.
I buy most all my kits when there is a flash sale on Facebook from online shops, magazines, designers,manufacturers, etc. I bought a Jenny Beyer kit Monday on a flash sale for 60% off. I bought it for the fabric not the pattern.