Taotronics LED's from eBay are a perfect example of what I would not recommend. The first place these guys cut cost is in the cooling, cooling the LED's and the drivers is critical for life expactancy and performance. Quality aluminum heat sinks aren't anywhere cheap enough for them to be included at that price. These guys also use cheap metal housings that quickly rust out in a saltwater environment. They've also recognized their insufficient cooling and reduce the power being driven through the LED's further reducing the light output. And any reputable manufacturer isn't going to give you a measurement of light out put in lumens - it's PAR that matters. Some of their lights don't even have dimmers on them and they actually mention handmade parts? Better to build your own if you're really budget conscious.
Where's your customer service when the light fails? And it will fail believe me and then you're without lights while you try to figure out how or even if it's worth sending back for repair/replacement.