Amazon.com will give you a free $10 promotional code with a $50 Amazon Gift Card purchase, valid for targeted customers through November 30, 2015.
Just click on this Amazon $10 Promotional Credit Offer and use code 1115GCARDS to get a $10 promotional credit when you purchase $50 worth of Amazon Gift Cards.
link -
http://www.amazon.com/b/ref=as_li_ss_tl?_encoding=UTF8&camp=1789&creative=390957&linkCode=ur2&node=11158618011its not a refer link its a direct link to offer page
if you got this message
Unfortunately, you are not eligible for this offer.then you are not eligible to use this code
You must purchase $50 or more worth of Amazon Gift Cards by November 30, 2015, to receive the $10 promotional code.
The $10 promotional code will be emailed to you 2 days after your purchase, and it can be used toward future purchases for items sold by Amazon.com.
This offer has been around in the past, but this is a new offer again.
thanks