There must still be 256 GB eMMC modules in production… If not, I should have bought more of them a year ago. Oh well
RK3588 /ROCK 5B+ eMMC support list
Last time they were available for about $15 per module, so I ordered about 16 of them
and package was lost at last mile carrier
Right now regular price for 256GB eMMC module is $45 on ali
5B+ with emmc onboard is availabe now, https://arace.tech/products/radxa-rock-5b-plus?variant=43599334834356