Price changes after selecting it
 

Using easyJet app. After selecting Book Flights, Destination and selecting the Dates Calendar, the flights were showing in green and grey for month. After selecting the dates, then pressing Apply and Show Flights, the price increased on the return flight by £10.99 On checking other dates, some stay the same and others change also.
Thankshttps://cimg5.ibsrv.net/gimg/www.fly...5daae984df.jpg
The return flight shows £69
https://cimg0.ibsrv.net/gimg/www.fly...02520a4688.jpg
The return flight shows an increase of £10.99

On that screen the £69 is the price of the ticket from your origin to your destination, just on another day. It is not the price of the return.