pocketdrummer :
New AMD VII cards are $700. That's a 29% (their words) increase in performance over the Vega 64 for 40% more money.
Most of that price increase is from the extra 8GB of HBM2. Last number I remember seeing was $22/GB, which means about $350 of the Radeon VII's price tag goes directly to the 16GB of HBM2. Slap an extra 8GB of GDDRx on Nvidia's GPUs and their prices are going to go up at least an extra $120-150 to cover that cost too.