I collect a lot of vintage glass, Vaseline/Uranium glass is still for the most part in a less desirable category namely many who collect look for pieces that look good in natural light. For the most part its comes down to, it is neat to show to friends once.
There were so many glass companies from Virginia to Ohio and most dabbled in this for a run or two so good examples are easy to find on ebay cheaply. I found the more solid pieces to be best for the light effect.