There are two Playmobil sets (6359 and 6362) that I really want to find my son for Christmas. They are both add-on sets that are currently unavailable on Playmobil's site. Some quick Googling doesn't turn up either set anywhere online. Are there any sites lesser known sites (meaning not Amazon, eBay, etc.) that are good sources for Playmobil? And how often does the Playmobil site's store restock? Do I have a chance of them coming back in stock before Christmas?