So I started wondering: how to buy clothing and accessories from Amazon. That second graph supposedly indicates purchases, not visits, and I've never had any luck finding anything other than the usual dvds/books/blah I could put in my cart for delivery to SA.
Interestingly, the graph don't specify amazon.com or amazon.co.uk and therein lies the challenge because they're not the same.
amazon.co.uk: I couldn't find anywhere any evidence that they deliver "clothing and accessories" to SA. I fired up a chat session with a Customer Service drone who admitted that there is no way currently to see whether an item will be shipped to SA or not, other than to add the item to the cart and start the checkout process including selecting a shipping address in SA. After continuing the system may alert you that the item you've chosen can't be shipped to SA and you then have to delete the item and try again. Meh, I said. Oh, he/she said, there is something else you could try... there is an add-on for Firefox: "Does Amazon Ship to ..?" which adds a button on the item's page which you can click to do a check. I installed it and it works fairly well. At worst it's way better than doing the whole check-out thing every time.
amazon.com: They have an helpful topic titled Search for Items Eligible for International Shipping
here. Note: the "International Shipping" search filter isn't available on the normal Amazon.com home landing page - you'll get it only if you first visit the Amazon Global page as specified on the help page.
Happy shopping.