You may find some people in Vana‘diel making their living as appraisers,yup,another good idea,for most of the players or travellers may lack knowledge to determine a newly found items,in that case they need an appraiser.

Some people in Vana‘diel make their living as appraisers, helping merchants and mercenaries determine the type of items they have picked up during their travels in Aht Urhgan. The Near East‘s powerful ocean winds, rust, or even mere age can make an item unrecognizable to the amateur eye. The finder may even simply lack the knowledge to make an accurate judgment and find himself unsure of how to use the newly discovered good. In such cases, appraisers use their experience and keen senses to ascertain what the item really is. Qiqirn can use their keen noses to sniff out information about an item, and many make excellent appraisers. The only drawback to using a Qiqirn appraiser is that they might be a little difficult to understand due to their odd accents...

more for ffxi here