No, it's not cheap at all. The savings is gained by lower shipping costs, ease in handling and increased conduit capacity (especially in congested duct banks). When you consider the fact that the equivalent of three 1" PVC/PE innerducts can be provided by one piece of triple-cell, the single smaller reel size alone makes a huge difference in handling costs. I have not actually installed it yet, but I have been on a project where it was being used. I was quite impressed at the speed and simplicity that surrounds the installation of this product.
"But the guy at Home Depot said it would work."