To be honest, I have not bought any product with Bitcoin yet. Since Bitcoin is illegal in our country, I may not be able to buy anything within the country. However, if I want to through Bitcoin, I can buy virtual products from the international marketplace. I want to buy a subscription to IDM (Internet Download Manager) through Bitcoin. I saw on their website that they support Bitcoin payment.
Yes of course, if it is not not possible where you are then you cannot do it.
Hopefully that will change in the future. Bitcoin used to be against the law
in many countries but is no longer illegal today so things can change at anytime.