I bought two of the lamps from the Verilux site. One of the lamps had a mismatched screw hole, so the lamp could not stand on the base. Instead of returning the whole (heavy) lamp, I had to use my electrical drill to puncture a new hole in the metal so that it could be used as a floor lamp. The other lamp's light bulb stopped working after 3 months of less than 8 hours of use per week. It cost almost $25 per bulb! When I posted my review on their site, it was never published. It is very dishonest for them to only post the good reviews on their site. I suspect that those reviews were posted by the friends and employees of the company.