I just looked up some 8 Ghz GDDR6 on digikey for curiosity's sake. These appear to be 512 Mb ICs vs say the 1Gb on a 2080 Ti? so no idea how that would impact the price, but still pretty cheap compared to the numbers I've seen floating around above, and give you an idea about bulk pricing when the minimum quantity is 2000.
View attachment 234682
Unless I’m reading it wrong that is a heck of a lot more than the numbers I provided. That’s showing a per unit price of $24.50 and $24.80 for tape & reel and tray respectively, with a minimum order of 2,000 units. The numbers I found said $11.65 per unit for 1GB ICs.