If I order Sonoff about 100 pcs. how much the cost.
OK i try to help you:
Cost for 1pcs. $7.50
Cost for 100pcs. $750.00
That was easy or? :)
Anyway, your post is at "Nextion-Section" under "Feature Requests". Just a little bit wrong ;)
Why don't you ask Itead by email or phone?
I am now reviewing all of the Feature Requests, this will take some time, patience please.
This is not Nextion Feature request - I will try to redirect