I bought the $3 treasure map so I could find the last 45 boards i needed and after smashing all the signs shown on the map I’m still missing 1 7500xp board.
The treasure map is for the whole game and the OP bought it because to them the $3 was worth it for the convenience. Not sure why they need to be questioned about the way they spend their own money.
Although, you can’t program directions to the treasures directly into your GPS with a Google search. There is a convenience that comes to those who do get the map.
The map didn’t reveal the storm island boards for me, just the main game.
I spent the money as my four year old enjoys helping me collect these things. It’s much easier to have him point to which one he wants me to collect next on the screen than on my phone or computer