I like to keep a large stash to audition different fabrics to use in the quilt. I cannot simply go to a store and buy fabric for a whole quilt, just maybe the larger pieces I would need. I collect the fabrics first, then figure out where to put them. I don't think I'll be selling fabric soon. I can see how your tastes might change and you have a large quantity of fabric to sell. Sometimes you sell books because you've made things from that book and don't think you'll make it again. Other books you might sell are about a technique you've perfected or have moved on to doing things a different way. I do have some books to sell some day.