Desem starter

Ever since reading about Desem bread in Laurel's Bread book years ago, I've been eager to bake with it, but have felt a bit intimidated about the whole process of creating a healthy starter.  I was wondering if anyone has a Desem starter they would be willing to share.  I can offer an exchange of some starters I have collected, and will also pay for postage and handling.  If you're interested, please send me a message.  Thanks so much.