Who is cheaper: Costco or Amazon?

A new market study finds that Costco Wholesale Club's online prices are lower than Amazon's -- and not by an insignificant amount.

A BMO Capital Markets report found that prices on Costco's web site for national brands are 19% lower than those on Amazon.com, MarketWatch reported. BMO compared pricing on 54 item basket.



BMO analysts believe Costco is positioning itself to capitalize on the "big opportunity" that it has online, according to the report.



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