When I shop for a quilt. I keep ALL reciepts with it for EVERYTHING!! If I use anything that was left over from another quilt, I put that on the bottom of the sales slip and a guess at the amt. for that item. When I fill out my quilt journal, I always put the reciepts and samples block (it has the fabrics I have used). This was when I have been asked about making a quilt. I will pull out my journal and let them look at it, then I open my envelop on the back of the page with the TOTAL AMT. I have spent and the total of hours. Then I let them know that it will be more, due to the price of COTTON. Most of the time this stops them, they walk away thinking I'm a NUT for spending so much for a hobbie, but they don't ask for $10 quilts. DH says I'm not nice, but he doesn't have any hobbies (other than BACK SEAT QUILTING!!!) lol.