I don't think you'll be sorry, even if you never watch any of the shows. The BOM patterns are way more expensive than $42/yr in the stores, so if you like this year's BOM, you will have a good value right there. :)
But, the shows are interesting and informative, too. Watching someone demonstrate how to do something is so much faster for me than trying to learn from a book. Usually, once I've watched something being done, I can do it. And if I don't quite get it, I can play that section of the video over and over until it makes sense. :)
I bought subscriptions to QNN and TheQuiltingSchool and both of them had some really good content, too. But, I think TheQuiltShow's site is easier to navigate and I prefer the style of the show to some of the others.