If you closely look at the URL of the link that I shared, it's Shell.com.pk which is basically the Pakistani origin domain and hence all the relevant information on that website is about the things available (either in stock or out of stock) in Pakistan and not outside Pakistan.
By the way, if you're unable to find the oil that I mentioned, please get the KIA Fully Synthetic oil from any relevant dealership, it's basically the same thing under the KIA packaging and you can use it without any problem.
I hope it helps.