Duergar priest in the wastelands doesn't actually heal

A duergar priest says 'I offer the following supplications:' Keyword Effect Cost ------- ------ ---- light cure light 100 copper serious cure serious 200 copper critical cure critical 900 copper heal heal 1700 copper blindness cure blindness 700 copper disease cure disease 1100 copper poison cure poison 1000 copper uncurse remove curse 1200 copper uncurse remove curse 1200 copper refresh refresh 200 copper mana restore mana 400 copper commoncold cure illness 550 copper chickenpox cure illness 700 copper influenza cure illness 1250 copper pneumonia cure illness 1800 copper Use 'heal ' to be healed. Use 'heal ' to try to barter an item for healing. Neither bartering for a heal or heal for coins works