Should I refund the sell?

So, I have been selling Amazon product reviews on eBay for $0.99 and believe it or not it has been a booming business. But I got a customer who wanted me to buy 3 of the same item and make 3 reviews. I though that would be easy since I have 3 different Amazon accounts. So I bought the item and left the review. I thought everything was finished with that sale. Then, the buyer sent an e-mail asking when I was going to publish the reviews. I went on Amazon to collect the review links and to my…

Should I refund the sell?