https://www.amazon.com/gp/product/B07N124XDS/ref=ppx_yo_dt_b...
You can now get a single 32GB DDR4 3200MHz SODIMM for under $120
https://www.amazon.com/gp/product/B08FBNQXC4/ref=ppx_yo_dt_b...
If so, I'm not sure comparing prices of DDR4 are the same thing, since the commenter was talking about LPDDR4.
* 64GB of 3200Mhz DDR4 in 2022: $240
memory has been getting faster and cheaper, and it really wasn't that expensive to begin with.
You manage to pick the highest margin product with the biggest variation of pricing inside a commodity market to compare using two data point within a short period.