At present, not a threat to me since I'm a Labella user, and also like dead strings, so I change once - when I get a bass with rounds. Or sometimes, I just leave the rounds on for a few years so they lose brightness. Of course, who's to say that other brands won't be similarly counterfeited?
Incidentally - I bought my last two sets of strings from Imperial Guitars online, and they cost just over HALF the price charged at juststrings.com, my other favorite strings place. They even special-ordered short scale flats for me and gave me the heavily discounted price.