Oh, what a bummer .

Unfortunately eBay won't do much for you because you picked the item up. They take no responsibility because they expect that you would check the item before agreeing to take it (although I totally get where you are coming from, so easily done and you'd expect the item to be as described ).

FWIW if you contact Valco, they'll probably send you a clip free of charge. They did this for me once

I hope the seller does the right thing.