I have been sewing 50 years. I started "collecting" thread when I got my embroidery machine 10 years ago. Never really learned to use it to it's limit. About 2 years ago my sister got a brother machine from Walmart and I found that machine easier to understand. Suddenly I needed more thread and E-bay was my new best friend. I have had to stop my self from buying more thread sets. Problem now is that I have a quilting machine and quilting uses a lot of thread and most of my spools are 1100 yards or less. I am now watching the 5000 yard spool sets.