Thanks for the followup ghost. I replaced my headliner awhile back and had the same broken clip problem. Though my panel is already in place with those Mercedes clips I will order a bag of your find on eBay. I'm sure they will be helpful sometime down the road.
I too have purchased directly from China before and have good shipping times. When installing some LEDs in a home remodel I purchased various transformers and fixtures. They were essentially the same thing as that which Lowes sells at ten times the price and they are working just fine.