Hey guys, along with the video I posted, I decided to make a text post with the same information in case you can't or just don't want to watch the video.
So basically I used the Amazon coin method that I'm sure you're aware of to get about a total of $139 worth of hearthstone content for $80(and I had an extra $10 amazon credit on top of this). The jist of it is you use another subreddit to buy an Amazon gift card off of another reddit user for a percentage of the price, then you use the Amazon gift card to buy Amazon coins, and use the coins to buy your Hearthstone goodies. Here are the steps in a bit more of detail.
This way may take you a bit longer to accomplish, but if you really are on a budget or just don't want to spend that much money for the content, then this is a way to get it just a bit cheaper. If you have any questions, feel free to ask and I'll try to answer them as quickly as possible, and my video is a tad more in depth for the process if you get a chance to watch that.