The light holder is good but is shown with the transformer attached in the photo which is misleading as the transformer is another item you must buy separately. Thus the cost is significantly higher than first thought.
We needed a 75 watt light which they sell the transformer for, but do not carry individual lamps for. So unless you want them in packs of ten, you are still left searching the internet to use the track fixture. Otherwise, they are quick in delivery and products look fine, although we have not yet been able to use them with no bulb.