They're basically fashion items -- you (probably) won't be using them for their stats, as there are far better options at their levels that are easily acquired. That being said, in terms of gil value, the Endless Expanse Codex might go for quite a bit. Not sure about the gloves, but you can always check the marketboard and see how those things have been selling.

Those are pretty nice things to be randomly given for free, I'd say.