US department store Kohl's will offer free returns for Amazon.
Opinion: Lance Wiggs gives his take on the location of Amazon's second headquarters.
"The risk is that we'd do a Dublin - get these companies on the hook through huge incentives, only to have them bail once a better offer came in"
The shares fell as low as $2.58, the lowest since January 1999.
"Don't forget rugby is growing rapidly in the US and Amazon could be eying this, as well as the British Isles market"