I always do online shopping from famous websites like flipkart, amazon etc. with flipkart, i am very satisfied; they always deliver things much before their estimated delivery time.
Amazon is also good with broader varieties than flipkart but prices are high on amazon compared to flipkart. overall I am satisfied with both websites.
I also tried aliexpress.com aka alibaba.com. superb website, no one can challenge the price offered by aliexpress with a huge stock of varieties no other websites offer. once I got a jakcet which was looking a lil bit different from the one shown in image but all other shopping from aliexpress is very satisfying.