Are you looking for birdcages to use as your card holder? Check out these pretty ones from Neiman Marcus and Pottery Barn.
Neiman Marcus - $55-$95

Pottery Barn - $29, $59, $79

But for the best deals on vintage birdcages, your best bet is probably ebay.
I have several, possibly ignorant, questions that I’ve been wondering about lately: What’s a card holder? And why does a woman need to carry a purse on her wedding day?