Why would anyone want to wear a rep strap anyways? For a few bucks more just buy the genuine strap. You can find new and used ones on risti for $100-150. I've picked up strap lots for cheap and ended up with 3-4 new in bag oem straps for nearly $100 each. Hell even half ass aftermarket straps are more than that. Jv are a different story as they hold value pretty well. But I've seen used ones for $150-180. I currently have all oem straps plus about 6 spare new in bag oems just waiting for new watches!
I've not seen a new black leather for less than $250 AUD, so about 190 USD. The fantastic rep Asso I have which I am super happy with would cost $50, and is I would say as good as OEM with very minor construction issues that are not noticeable on the wrist. Straps don't last as long as watches, either. You can't say why buy rep when it's so much cheaper, we're on a rep forum. Why buy rep watches at all if that's your thoughts on the matter?
Bit of a moot point as it seems like there are not really any good OEM strap reps anyway, so I have to buy gen. (Yes, or aftermarket, but I've bought plenty of those.)