The $193.00 for an extra 32GB of LPDDR5X is simply an example of Lenovo's CTO website showing the pre-discount MSRP prices for all the upgrades, even though they run near-permanent discounts of 40% and more compared to their official MSRP for many products.
As pointed out in the other comment, the true price at Lenovo for this upgrade is only $112.80 — not as good as you'd get with the DDR5 SODIMM, but it's actually cheaper than what Crucial supposedly charges for their 32GB of LPCAMM2, which isn't even as fast as what Lenovo includes.
As pointed out in the other comment, the true price at Lenovo for this upgrade is only $112.80 — not as good as you'd get with the DDR5 SODIMM, but it's actually cheaper than what Crucial supposedly charges for their 32GB of LPCAMM2, which isn't even as fast as what Lenovo includes.
https://www.crucial.com/memory/ddr5/ct32g75c2lp5xg — $174.99 for Crucial 32GB LPCAMM2 LPDDR5X-7500 — compare to a net $112.80 difference at Lenovo for an extra 32 GB LPDDR5X-8448MHz (Soldered).