What do you mean by signature shoes? Nike's star signature style? Or shoes with autographs by celebrities?
If it is signed, if it is not listed in China, the store can't bring it to you ~! You can go to some private stores to see, the more cattle private stores will have a lot of things that are not listed in China, but the price is more expensive ~!
If they are signature shoes, they can't be bought in China. You can go to international ebay to have a look. This kind of thing is often auctioned and the price is relatively high. And it needs to be mailed from overseas. Generally, signature shoes will be bought out exclusively by some companies, and signature shoes have laser stickers and certificates ~!