NEW YORK (TheStreet) — If eBay were valued near Amazon's 160 or more P/E valuation, eBay shares would trade for over $500. When you consider eBay earns more profit per share than Amazon, maybe it's eBay shares that should trade above $300. eBay has so many superior metrics compared to Amazon it's hard to know where to begin. Take a look at the two companies' cash-flow history. EBAY Free Cash …
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