I believe no one is responding because your post comes across as rather rude and condescending. I have one, but don't really have a desire to sell it to you because I worry about how it will turn out based on your OP.
Just sayin.....
Here are some links to a new one, which is less than $100. So not sure why you are trying to find a used one.
https://www.ecstuning.com/b-genuine-...z/25117595282/
https://www.bimmerworld.com/BMW-Inte...117595282.html