Where is the best place to sell my parts ABC Valve Block and Light

[maha]

Hi

I have a faulty ABC Valve Block for a W221 S500. I know some people have sold these before and got good money, where is the best place to sell them?

Also if I want to sell a light I have, I put it on ebay not much interest so wanted to know if you all know a better place to sell them

Thanks