My friends and I have bought many cases. We first bought branded cases for 100-200 yuan, but found that they were just so-so and not worth the money. The ones with free shipping for a few yuan were good and bad. Some of the bad ones were not one-piece, but the frame and back were glued together and broke in two weeks. The better ones were okay, but the fit and protection were not good enough.

Later, I found that Spigen was the only exception, selling for 20 to 50 dollars on Amazon in the United States, while the flagship stores in China had very reasonable prices. You can buy entry-level models for 40 yuan and high-end models for just over 100 yuan!