Sounds like he may have customized it and or just found a box for cheap and threw it on there to make it more marketable. XS ear socks are generally shorter and smaller as the ear stems are kind of squared off but unless they are OEM and brand new they should hold no value. As far as the nose bridge if it is the correct size and they match one may be stripped which may set you back around $50 to get it drilled out/fix if the damage is too bad.
I concur with other members, it sounds beat up and your going to end up spending more money to fix it than it’s worth. I would return and never touch eBay again unless you want to have fun and mess with peoples bids.
@oakman1992 is selling one and you can get new custom cut lenses from @Chris A Hardaway . I have an extra set of new OEM BI lenses to if your interested.