Can you measure the size of them? I found really nice boxes for sets of cards at
www.uline.com they come in gold, white and clear and many different sizes. You have to buy in bulk but if you find someone that wants to split the order with you it is not so bad. My mother-in-law deals with a lot of this type of stuff and she said she cannot get them any cheaper with whatever discount she gets. On the website you want to go under retail bags and packaging, then retail boxes and then to stationary boxes.
Hope this helps!