I recently signed up for Gogo because of a 3-flight journey. I was very surprised at the variance of price. On the 1st leg, the price was $20 for a day-pass of gogo. Then, when I was browsing the Delta app the price was $16 for a Delta 24 hour gogo pass. Finally, on my last segment, the price went up to $24 for a day-pass of gogo!

So the same product over the same 3 segments was $20, $16, $24. I don't usually buy gogo, but be aware of the variation. In general, it may be best to purchase through the Delta app instead of direct with gogo.