I buy all my LEDs from
SuperBrightLEDs. Most/all of their lights are also from China but they have a 2 year guarantee that works. I had a lead break off one of my lamps when I moved it to a different fixture, I contact them and had a RMA in about an hour. Mailed the lamp back on a Saturday and had a replacement at no charge the following Thursday. If you compare the same style and what appears to be the same output their prices are not that much different than eBay. Being an engineer I like that they have full specs on what they sell, current draw light output, color temperature, etc. Also has a huge selection all in one place. The bonus is they ship cheap and fast.