Problem is a lot of vendors that used to use Sonix/EVision chips have switched to Sinowealth or other chips during the chip shortage and haven’t switched back. They do this without changing the model numbers. Sinowealth’s chip is inferior in every way and does not have any QMK port so if you get stuck with a new PCB revision you’re screwed.
I can’t recommend anyone try to buy a Sonix/EVision board anymore for this reason unfortunately. It was awesome when every cheap keyboard on the market had one of these chips though.