Your search asking for koa soprano ukulele has found the following available right now for sale from eBay.

Things you might try to refine your search:

- add the size of the ukulele e.g. soprano, concert, tenor or baritone.
- specify brand of uke e.g. Martin, Kala, Lanikai, Oscar Schmidt.
- specify the wood the ukelele is constructed of e.g. koa, mahogany, acacia, spruce.