Is there a reason to peel onions for storage or sale?
Combination new technology and an excuse to charge more.  

It seems to be a 'value added' feature driven by new technology in processing harvested onions and the 'convenience' of not having to peel the Onion.

According to fruit today this is a growing market.  As others have noted sometimes Organic means an excuse to charge more.  Peeled onion aids that front.