[Tagging] Tag for "tax free shopping"

[Jarek Piórkowski]

On Tue, 31 Dec 2019 at 18:48, Colin Smale <colin.smale at xs4all.nl> wrote:
> Just to be clear: in the situation I am referring to, an article priced at GBP120 in such a mixed shop is GBP120 net to an exporting passenger, but GBP100 net + GBP20 tax (@20% VAT) to a non-exporting passenger. Everybody pays the same, but the accounting is different.
>
> The implementation in a couple of shops is described here:
> http://www.whsmithplc.co.uk/vat/
> https://www.schiphol.nl/en/page/taxfree-explained/
>
> So the shop is both tax/duty free, and not, at the same time. Hence it does not fit the proposed description of either duty_free=yes or duty_free=no. So we need a value to represent "yes, if your next destination is outside the current customs area." Duty_free=mixed would also not quite cover it IMHO as it might imply that it only applies to certain goods, whereas the distinction I am trying to make is based on destination.

What do you consider a definition of "duty free" or "duty free shop"
that would be useful to a OSM data consumer?

--Jarek