Which major e-commerce platform's name comes from a linguistic root meaning 'to haggle' or 'to negotiate a price'?

In the ever-evolving world of online retail, language plays a crucial role in branding and consumer perception. Many major e-commerce platforms have names with fascinating linguistic origins that reflect their business philosophy or market positioning. This poll tests your knowledge about the linguistic backgrounds of famous online marketplaces and how language influences retail branding.

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eBay (from Echobay, the consulting company founder Pierre Omidyar originally intended to create)
Amazon (named after the world's largest river to suggest scale)
Alibaba (from the Arabic tale where 'Open Sesame' granted access to a treasure cave)
Etsy (from an Italian expression 'etsi' meaning 'oh yes!')