I highly recommend you buy your Twin Stick EX from YAJ.
Here are the 4 used ones I scored on Buyee.
https://buyee.jp/item/yahoo/auction/u420003875
https://buyee.jp/item/yahoo/auction/d509886721
https://buyee.jp/item/yahoo/auction/j514334165
https://buyee.jp/item/yahoo/auction/c683955145
Of course they are expensive to ship, but they are dirt cheap compared to when they are found on western sites. Some had a few scratches but all worked alright, and I said, it's arcade quality components, so you can repair them easily for the price of a few arcade switches.
Here are the 4 used ones I scored on Buyee.
https://buyee.jp/item/yahoo/auction/u420003875
https://buyee.jp/item/yahoo/auction/d509886721
https://buyee.jp/item/yahoo/auction/j514334165
https://buyee.jp/item/yahoo/auction/c683955145
Of course they are expensive to ship, but they are dirt cheap compared to when they are found on western sites. Some had a few scratches but all worked alright, and I said, it's arcade quality components, so you can repair them easily for the price of a few arcade switches.