Models that were moved out of the country they were intended to be sold in may not have spares in your country. Getting the part to your country can cost more than the entire tablet and you might demand they warrant the part.
I can see why a company would not want to do this and you are experiencing first hand why grey market products can be a huge problem for the consumer.
My Samsung Galaxy 8 purchased on ebay, requires a screen replacement. Samsung Australia have informed me that considering the phone was made in Italy, they will not replace the screen. Please note I was paying for this screen, it wasn't an insurance claim. I wanted Samsung to replace it to ensure the phone remains waterproofed.
Has anyone else been in this situation and if so what was your outcome?