Yes ,you can see on the quotation ,it mentions the REV is "None " ,and the price is 0.90USD.
But what we sent the REV is E ,and the price is 0.91USD.
Actually 0.91USD is correct.
For your information ,the supplier is orginally Lanbo ,but switched to Praise later.
And firstly it includes the die cost ,thus the price of this parts is a little complicated.