You are bidding on 5 seeds of Prunus subhirtella Pendula. 

 These plants get wonderful light pink flowers in spring and have a great weeping habit - they can grow lage, to 35 feet or more.  They are hardy to at least USDA zone 4, and possibly colder.  These plants would make excellent additions to your rare plant collection, or just make a unique statement in your yard.

HAPPY GARDENING :)