Yes, but a large number of items sold by third parties are not fulfilled by amazon.com. For example if you look at the treadmills in the sports section, only items sold by Amazon.com have prime or super saver.
Your point is valid -- Amazon does enable third-party sellers onto the platform that don't utilize Amazon's shipping infrastructure (FBA, which is a recent development). But online retailers can easily leverage FBA to become as competitive with Amazon in terms of shipping perks.
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Yes, but a large number of items sold by third parties are not fulfilled by amazon.com. For example if you look at the treadmills in the sports section, only items sold by Amazon.com have prime or super saver.
Your point is valid -- Amazon does enable third-party sellers onto the platform that don't utilize Amazon's shipping infrastructure (FBA, which is a recent development). But online retailers can easily leverage FBA to become as competitive with Amazon in terms of shipping perks.