They must be a repop or he has the original tooling. I've been watching the seller for about 5 years or so and about every 3 or 4 months they pop back up, brand new quality. Really a nice reproduction if they are.
Agreed. I have this one from ebay, too. Very nice. Found it after I paid $200 for an original. D'oh! I also bought this seller's bowtie center caps for the Z28 rim. Again, very nice and great price like the jack cover.