What difference does it make, in your eyes, if the grapes come from China? Surely the health benefits would be the same?
Ditto "3rd world countries" (a term that has generally fallen out of use, as it is considered patronising and colonialist, by the way). Do grapes grown in, say, Kenya, not have the same effect as Good Ole Merkan Grayups? What kind of patronising, racist nonsense is this?
Finally, you say that low price is an indication of low quality, whilst at the same time castigating pharmaceutical companies from pricing their products too high. Are these judgements simply arbitrary expressions of confirmation bias, or is there some hidden logic here?
ETA: By the way, I had a look at GSE extracts online, and none of them appear to state the country of origin. Which supplements do you use, and where do they come from?