May I add that you do have a little payback. It would be a service to others to put in a review of the seller on eBay. It's the only way other buyers will know not to buy from that seller. Please! ?
There are lots of Callas available from reputable sellers in the US. Plus you will get to buy rhizomes, not seeds so it will save you growing them for a year or more before you get blooms. Not many people grow them all the way from seeds when you can buy then in bloom at the big box stores.