Personally, I love the fact modern smiths are continuing the art and traditions of the past. The Pendray blade that started this thread is an excellent example, and one I'd be proud to own.
I, myself, have several modern interpretations of my favorite weapons, and every single one is a work of art. None were inexpensive, and all cost more than I've paid for nearly any antique. I was happy to pay the price for the quality of workmanship in every instance.
Any attempt to compare the "worth" or "value" of antiques to their modern counterparts will fail. You may as well attempt to compare modern hand-crafted furniture to antique furniture.