Thinking outside the box here.
This might be a bad idea.

How about…hrm, not flooding, but putting on a few Ebay ads ourselves. Title it (them?) something along the lines of “Absolutely Free Despecialized Star Wars Set” and in the description explain how to get it free.
That way if anyone ever goes to Ebay to search for where they can buy a set, this result shows up.

Not sure how Ebay works, but it would be nice if we could make the auction without accepting any money. But chances are we’d have to make it with at least a $0.01 ‘buy it now’ option??