Most of the time when i see fairings like that i think they could be a Chinese copy, its the Agip sticker they often have on them, even with a black front mudguard? Fairing Bodywork Body Set BH for Ducati 748 996 998 916
Some folk don't always think of photographs from all angles though, I think the resto comment may be more on account of it's age than condition. I'd get the sellers details and talk to him, not everyone does great listings as it's not very often you sell something unless you're a dealer. Get his phone number and talk to him. From that you should get a feel for who he is rather than what it is from photo's only. I find it better to talk to folk who are selling stuff.
Difficult to tell from the pictures whether the fairings are original, if they are aftermarket they appear to fit well, the exhaust heat shield isn't correct for a 97, wheels have been resprayed, looks like it has a radiator guard, generally it looks quite clean and looked after. As mentioned it's worth speaking to the owner or having a look. Check to see if it's had the rockers checked recently, that is a possible extra expense.