(1) What makes this stuff superior to the (far less expensive) easel pads?
I am running Castle Whiterock and the maps are very large -- level 3 is about 60 squares by 90 squares (300 feet by 450 feet). So it takes about six easel pads to draw out the maps, and you have to switch between them. (Unless you have room to spread out a five-foot by eight-foot map, and even so, how would you reach your minis in the middle?) So I thought gaming paper would do it in just two giant strips, each of which would be the width and length of my table.
Unfortunately, one roll of gaming paper is 144 inches long. Meaning I can make one 85-square map and then come up short at 58 inches on the other one. I thought the roll would be longer -- didn't really do the math.
The easel pad is 30 usable inches times 27 times 50 sheets -- that's 40,500 square inches. At 30*144 inches, Gaming Paper is 4,320 square inches, about 10% as much.
I personally paid $21 for my pad of office paper in Madison, so I guess it's like shipping was included. But note that Gaming Paper costs $8 to ship four rolls also. Say you get 12 rolls. Then the easel pad costs $21/40,500 = .051 cents/square inch and the gaming paper costs $56/51,840 = .108 cents/square inch. So it's just twice as expensive.
Switching between the easel pads is sometimes less of a problem than I thought when I bought the gaming paper. In dungeons, you don't always get in situations where the party should be able to see across the borders. You usually don't have enough table for more than one paper anyway. And in my last session, the party split up when the fighters were captured and the rogues slipped away, and we just cut back and forth between two maps: "Now, back to the interrogation room!" (whisk out that map from underneath and put it on top).
I guess my new solution is going to be just taping the easel papers together for big maps. I didn't think of that at first because I had planned to keep them all on the easel and just flip back and forth, but in practice they tear off in the breeze.