7. Costco
Annual eCommerce Sales (in Millions): $3,618
Alexa Global Ranking: 1108
IRPS score: 67
Size of the online company: 9th
Being aware of the shifting tide of consumer behavior, Costco, number 7 on our list of most successful eCommerce websites of 2017 launched their online shopping website way back in 2001 to facilitate their sales to consumers and other businesses. They have come a long way since then and their annual eCommerce sales last year was just over $3.6 billion which allowed it to take the seventh place on our list of most successful eCommerce websites of 2016.
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