Here was my first Opera polish, which was 29 RMB at the time (they have since raised their prices to 39 RMB, or about a bit more than $5 USD):
Despite the fact that I'm not a huge fan of sheers, I am a huge fan of this polish. The brush is really great, kind of short but a little poofy so there's not a lot of streakage. If you also notice, though it's a sheer peachy/orangey color, it also packs a lot of gold shimmer to make this color really pop out.
PS: I just absolutely adore Phantom of the Opera, and it's a dream to see this musical in person!