I say old chap-this venture sounds like a load of old bollocks, claptrap or codswollop. (to use proper English terms).

If this deal is on the up and up then I'm a monkeys uncle.
Those grilles look as bespoke as my left nut. Apart from the thin edging they look little different than what you can get on eBay, though from the pictures the upper grille doesn't look right or fit correctly. If you need it in black that won't be a problem, just a can or two of flat black paint, no charge.

Sounds like someone fishing for a big order so they can unload a bunch of these "off shore" made gems. Ask where they are made.
I do love the personal touch "story" about the motorway. This guy's a Pro.
Good luck. Please feel free to prove me wrong.