Okay, I'm trying to find a Dell 4C216 4mb cache expansion for an Inspiron 2500. I know that's a pretty obscure thing to try to find given it's age and how odd it was even when new, but I'd like to find a working one. I've found two on ebay, both overpriced though one has a make offer part. The problem is that they won't answer any questions about price or shipping. The other one is just ridiculous (~$90).

So I'm asking to see what other ways do you guys have for finding very obscure parts? Or by some random chance does someone have one of these that they don't want?
Thanks.

peace