Hi!
I only checked a couple of bags/wallets that my friends and I are interested in. I think the price (before tax refund) lies between EU site and US site.
For example:
1. Twist XS wallet is $710 on US site (before tax), is 480 euro (545$) on France site, and is 13300 mex peso (655$ before tax refund). It would be 8.9% cheaper for tourists after tax refund.
2. POCHETTE METIS in reversed monogram is 1880$, 1430 euro (1625$), and 39500 mex peso ($1947). This one is not cheaper without tax refund, but is often sold out in US and EU.
3. Bond Street BB, sold out on US site, is 1870$, and 36500 mex peso (1800$).
My point is, if you happen to be in Cancun or Mexico City for vacation, it is not a bad idea to check LV and Chanel. They have pieces that are often sold out in the US, and the prices are often cheaper.
HTH.
Ah, thank you so much for the detailed reply! Do you know if you get full 8.9% refund or there are fees that cuts into refund like in Europe? I read old reviews of the tax refund and people often complained about getting it looooong time after or not at all. What's your experience like? Also wondering if you know if Mexico City has special hot stamps like they do for New York? Thanks so much!