These are worth the extra cost. The window lights are made of real glass and the caps are coated metal. The remainder of the product is made of plastic. The downward lights are nice and they light up the floor of the deck enough to see where you are walking. The top light provides just the right amount of light, not too weak and not too strong. These do not feel cheap and the metal cap makes them feel sturdier than the all plastic ones. They are not cheap overseas junk and are well made in CanadaThe customer service line is included in the instruction sheet. The light mechanism appears to be replaceable if the lights go bad by simple taking the light mechanism out and putting in new parts. It has a good design and does not look cheap. Installation can be done from the side but I chose to drill new holes in the bottom of the inside (had to disassemble to add holes) and attached them with Deckmate screws directly into the 4"x4" posts under the Timbertech post sleeves. There are 4 post adapters and one of them does perfectly fit the Timbertech Evolutions Rail post covers (nearly impossible to find).