I have purchased an AC which is not a branded item but made locally by assembling various parts available parts. I got it for a very less rate and it worked for more than 17 years without any problem. No single repair. Even now also it is in working condition. Why I quoted this here is again our luck also plays an important role.
I personally feel laptops, expensive cameras, and TVs should be bought from a reputed dealer or a showroom or the company website itself, an extra 5-10% would be worth in the long run.
Last week, I read about a case of a refurbished car sold as a new model and a fake Benz car sold similarly.
'Idhuvum Kadandhu Pogum "
Even this challenging situation would ease