For Amazon Prime members only, reorder an item from your purchase history of $10 or more using Alexa and get a $10 Amazon credit for free. (To order, say "Alexa, reorder X;" link is for reference only.) That's the best credit offer we've seen for an Alexa order at Amazon. The credit will be delivered via email within three days. It's limited to one credit per customer and account and some restrictions apply. The credit expires July 1, 2018.

Note: The offer is for first reorders with Alexa.