I'm a big fan of this from an ethical perspective alone (and things like price parity and sliding scale pricing based on revenue/income are things I really would want to see more of). I've worked in cambodia a lot of my life and there are so many things not possible or deeply skewed because it's all in a pricing that's relative to rich countries.

I think in terms of your question for becoming the cheap option or race to the bottom - if you mean folks outside of south africa (or other countries of your choice) you could potentially add an identifier i.e. business or residential address or business number or something that would exclude everyone in the netherlands choosing your specific local product for example. Just a thought off the top of my head if that's possible (in cambodia this would be a nightmare because of lack of addresses and business numbers but there might be another way!).

I like it too from a 'support your local folks' perspective.