The whole copyright subject is a minefield, and may be something that TQS could bring up in a future show. It also depends in which country you are.
I can't answer your question, but I'm thinking: If I go out and buy a book, a coat, a painting, etc. in a shop or anywhere on line, then I own it. So I can sell these items to anybody who is willing to buy them from me, right. So you bought a quilt top. It's now yours and you can sell it to somebody else.
I wonder if Alex or Ricky read this because they may be able to answer your question, because they surely come across copyright questions a lot.
Let's dream for a minute and imagine that I won the lottery and I immediately went to Ricky and bought his biggest and most expensive quilt from him. Two years later I have managed to spend all my lottery winnings and want to sell Ricky's quilt to my friend Margo who has always fancied sleeping under one of Ricky's quilts. Can Ricky stop me, because he doesn't like one of his quilts to be used in a bedroom that has lilac walls? I don't think so. He no longer owns the quilt.
But if, for example, the painting I bought in a charity shop for £20, is a fairly recent work by a totally obscure and unknown artist, and I decide to have the image printed on postcards and sell these for profit, the artist may knock on my door and want his/her share of the profit, or tell me to stop selling the image of his art work. What does the law say in this scenario?
Going back to Ricky's quilt in Margo's bedroom...... (and here we would need legal advice): Margo's home is featured in an 8-page spread in the magazine 'My Home'. She'll get paid $1000 for the article, and Ricky's quilt is featured, surrounded by those lilac walls on the front page. Ricky is furious. He detests the magazine even more than lilac walls. But can he stop Margo??? I haven't got a clue (scratching head), but I would love to find out.
I'm now going to buy a ticket for the next lottery draw......