Look around for small, independent health food stores in your area. I shop at one in a big city an hour away from me (love that store, always make a big list when I'm going in that direction, which is only 3-4 times a year), but it's not a chain, so it wouldn't help you.
Overall the prices at this store are high (organic convenience foods, gluten-free stuff, etc., BUT a few things are priced very well. The pasta is sold in bulk, meaning that you serve yourself from a big bin and pay for just what you take -- either enough for one serving, or a cartful. I also buy unusual dried beans (yes, more expensive than pintos and black eyed peas at Walmart, but we enjoy the variety) and spices. Spices are my personal favorite item from this store. Think of a bottle of spice that'd cost $5-6 at the grocery store -- at the health food store the same quantity is something like 40-60 cents. The big jars are labeled with high prices (say, $14/lb for oregano), but a pound would probably be the size of a throw pillow.
Another place I've bought WW pasta -- and this'll surprise you -- is the farmer's market in my daughter's college town. One vendor makes excellent homemade pastas, but she sells them for about $4-5 for a one-family meal. Yeah, way expensive for pasta. BUT she also sells GIANT BAGS of what she calls "pasta butts" for $10. These are the tail-ends of the pasta that aren't perfectly formed, or batches in which the color isn't uniform. People snap them up in a hurry. We've been eating from a bag of these "pasta butts" since May, and we still have 1/3 of the bag.
So look around in places where you don't expect to find WW pasta. You'll find it -- or some other food source -- when you're not expecting to find it.
