Welcome to Coin Community, bfisher690.
I wouldn't touch this coin on a bet. It's not even close to the claimed grade, in my opinion - I don't think it's any better than VG10 and probably VG8. It's pictured in a slab from a company which is notorious for overgrading and problem coins - they're not on the list of "recommended" graders - and if NNC is calling it "cleaned," well, it's probably been hit by a grinder.
The asking price is that of a nice, original VG10. The value of a cleaned VG10 is considerably less. This issue, although scarce, doesn't climb dramatically in price until you reach the AU level. My advice would be to advise your friend to tack another $300 on to his budget, and shoot for a VF-XF example from a regular dealer. With judicious shopping, you should be able to land an XF40 in a reputable slab for $1500.
In short, this is not a coin you buy on
ebay.
I see no real problem with the seller - his feedback is excellent and he's offering coins in "reputable" slabs as well - but a valuable coin in a third-world slab is a red flag.