Amazon Gift Card earned from Mturk

I earned $40 gift card amount from Mturk micro jobs to my amazon shopping account. But by policy gift rewards from mturk connot be sent or giveaway as gift. I was left no choice but to purchase it to items from amazon yet the problem is my country carries a huge cost of shipping that left nothing as I attemp to purchase an item at amazon. The least shipping cost is way away from my $40 gift reward. Any suggestion how would I convert this gift into cash. I wont mind if I will only recieved $30 out of my $40 gift value that would be fair enough for me. Sorry for my bad english.