This is more the tale of the priestess than it is that of the Wizard. With that in mind though, it is a solid tale well worth listening to.
I binge-listened to all the Earthsea books on Audible. They’re that good.
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Sometimes a book goes temporarily out of print - and sometimes no audio version has ever been recorded. Audible wants to give you the most complete selection we can and we'll keep adding series and filling in gaps as quickly as possible.