The cryptocurrency mining boom has drastically effected the price of GPUs since the beginning of this year. In December of 2017 I purchased an Nvidia 1080 gaming x from MSI for around $590. Typically the purchasing of higher-end GPUs is exclusively held by people that play video games or people who need such power for specific types of work loads. The introduction of bitcoin mining and other cryptocurrencys has created a new market in what was an already saturated one. Companies were having a hard time keeping product in stock before this new trend had even started. Now with a new reason to buy high-end cards the only way companys can keep their products from being out of stock all of the time is to raise the prices to a point where the average person cannot afford one. Like I mentioned earlier, I purchased a card at the end of last year for $590. As of right now the same card I bought 2 months ago has almost doubled in price, now sitting at about $1,039.
Here is a link the card I purchased last year for $590 – https://www.newegg.com/Product/Product.aspx?Item=9SIA85V4R62388&cm_re=msi_1080_gaming_x-_-14-127-943-_-Product
Here is a link to a video about how it has effected the market – https://www.youtube.com/watch?v=uT-pP4wvLV8