If you are owner of Alexa Device then you can order Fire HD 8 Tablet , 8" HD Display 16 GB – w/ Special Offers for $49.99
Link is just for reference only works with Alexa Device, say "Alexa, Order an 8" Fire tablet"
https://www.amazon.com/dp/B01J94SWWU
Alexa Deals $10 Prime Day Bonus Offer Terms & Conditions:
Offer only applies to an eligible purchase of an Alexa Deal using Alexa Voice Shopping on an Amazon Echo, Echo Dot, Echo Show, Amazon Tap, Amazon Dash Wand, Amazon Fire TV or Fire Tablet. Purchase must be for an item of $20 or more.
Offer limited to one per customer and account.
The credit will be applied to your Amazon account within three (3) days of the qualifying purchase.?