This has a tremendous influence on the buyer’s mind. A typical buyer would think that since majority of the buyers are happy with the product, the product would be worth buying.
Now that I think of it, most of the times the reviews begin with -
"First of all, thanks to Flipkart for delivering the product right on time. The packaging was really well done
Flipkart packaging is really awesome.
I think hiring people to write reviews would also help them get a better SEO score -> more traffic -> more conversions -> more money!