Ladies and Gentleman,

This week, when flying on United, I have realized that the United was trialing on fluctuating Wi-Fi prices during the flight.
I know the prices depend on the route, however, the price change happened on the same exact flight on air.
Just after departure, when we have departed, the Wi-Fi prices for this 1h30 min flight was like;


However, a few minutes later the price has been decreased for a reason that I don't know ( 30m and 1h options as well which is the strange part )



Is there a reason behind this trial such as ( time of the day, etc... ) or are they now trying to get the extra money from those passengers who purchase Wi-Fi at the first minutes of the flight?