The squeeze is mostly within the segmentation of VRAM between products, it's basically a commodity and this week the spot price for 8GB of GDDR6 has varied from $1.30 to $3.50 [1].

Yet to get a card with 8GB more than one with comparable logical performance, you'd be looking at hundreds (or thousands in the case of "machine learning" cards) of dollars.

[1] https://www.dramexchange.com/