Have you had no joy online with the bezels? I replaced most of the ones on my P1 special just by hunting online, quite a few places sell them. Saying that, it looks like you’re in the US so maybe only UK websites?
As for dodgy people responding to ads, there’s sadly not much we can do to prevent people targeting classic car forums / adverts. Thankfully it’s generally quite easy to weed out the scammers with a few technical questions, and maybe a request for a picture of their car etc.