Unfortunately, its never that simple. I build sets out of individual cards or partial sets, and see this occasionally. As has been mentioned, cards got printed by different printers for the different NSS warehouses. You even have to be careful about which cards are built into the set as often the US and international sets have differences.
I can't say if some of the Hatari cards are repros, but this isn't a particularly hot set and it usually doesn't go for a fortune. Don't know about those pair of $200 results, but generally, this is a $30-50 set and not worth the bother of making repros. I am guessing that you have cards printed from two different sources, combined to make a set, especially since the re-release was during a transition period for paper stock.
yes, this is what I said to someone privately
I can't imagine a reprint of Hatari cards
on Egbert, I've only done small business with him, on modern poster titles I may have needed. I don't know what repros he's been accused of selling, and I'm not aware that he has a 'Rochester connection' or the need to gravitate towards one, seeing as in L.A., you can get everything you want in posters for the most part
I can say that in the Caidin stock, I am finding repros in boxes that are not marked as such, however, when I go to the boarded posters (stuff that was for sale in the store, displayed), the price tag properly mentions 'repro'. I can however see how some people might get caught not recognizing that some of these posters are repros.
the Blade Runner cards.. yes there are known repros, and even yes, the bordered set (there is a borderless set) has been called a total fake by some people, who say they were not released during the original theatrical run and I know other people who say yes they were, which leaves open the possibility that not all NSS offices were using a bordered set, or the borderless set, creating a regional difference in theatrical exhibition.
Obviously the key is the paper, which you can only feel once you have them in hand and clearly, a person who hasn't hasn't a real set will have more difficulty determining if they have a fake set, which creates a conundrum.