There are imported models of the VGN R1 series available
here. Whether the website is trustworthy or not, I'm not too sure, but there were a few people from the IndianGaming subreddit who found it legit. I think R1 is the best wireless mouse under 8k, barring any productivity based mice.
There is unfortunately a very dry mouse market here, compared to the US, which has tons of gaming mice brands. They have access to Ali express as well, which has lots of Chinese clones of popular mice that surpass them in quality as well.
Edit: there are imported lamzu mice for about 8k here as well