I bought a refurbished laptop with 64gb ddr4 (so-dimm) last week. It was just slightly more expensive than the 32gb variant with same specs. I guess the seller was not yet aware of the high memory prices.

In a week or two I might be able to make a profit by just selling the memory.

There's cheap adapters that allow you to use SO-DIMM memory in desktop DIMM slots. Of course performance will suffer compared to native DIMM sticks, but if you happen to have SO-DIMM laying around that you aren't currently using, this might be a nice use for it.