So I heard from tc that Taiwan is a heaven for shopping. Here's how the ladies in her group shop:
1) used up all the cash
2) started using card
3) borrow money from trip members who still have cash
4) when they get money from VAT refund, continue shopping again.

My family and I will be there next month.

Considering my sis has already been shopping monthly from Taiwan e-shop such as queen shop, Tokyo fashion, bai momo etc...

Good luck.