I trust Worldchips store in Ali???but they have 2.4 and 2.8 inch LCDs, removed 3.5 and higher from list.
Alternatively Aihasd store is available with higher sales numbers??but I didn't buy from there yet. Make sure and ask seller to send Nextion branded, you know there is Chinese brand of this, I don't suggest that one. You can get basic version, works fine.
TA2WK