As someone who’s spent time between California and Japan recently (2019-2020), I honestly think the differences between a Daiso in the US (Los Angeles) and a Daiso in Japan (central Tokyo) are very slight. I bought a lot of little gifts for people from Daiso when I was in Japan, and I’ve found that most of what I bought is also available in the stateside stores. Most of the everyday goods (household, serving ware, tools, cleaning, toys, stationery, etc.) are identical, with only the food and beverage section differing significantly. For instance, in Japan there is a limited stock of local brands by the register (somewhat marked up vs. the local combini). In California, it’s a very select handful of true imports, but most of it are brands who are producing a local US variant that Daiso doesn’t have to ship through customs. And interestingly, they stock some specialty Hawaiian drinks like POG that you can’t find easily in either California or Japan.