Chiang Mai night market has some great rip offs but it’s buyer beware. Years ago I got a dandy Levi pants copy. Put them on the next day and went around town in 85F heat and 90% humidity. In the evening everything was still fine except for my blue legs.
I lived in Chiang Mai for about 2 years. Thailand does not have good fakes. Believe it or not, Laos is really where I got the wallet, in Vientiane or Luang Prabang. But they get their stuff from Hong Kong. The store is in both cities, it’s called the Walk Man or something like that. Most of the stuff in those 2 stores is high quality fakes.