You'll need to buy 2 double rolls to cover that wall, so a cost of 600 dollars.
Your wall is 2m high. The pattern repeats every 35.5 inches (89cm), so you'll need 3 repeats for each drop, using up a length of 3 x 89cm = 267cm
The wall is 2.5m wide. The roll is 27 inches wide (0.67m), so you'll need to use 4 drops.
So you'll need a length of 267cm x 4 = 1068cm = 10.7m
A double roll is 10 yards long, which is 10 x 0.9 = 9m
So you haven't quite got enough with one double roll. Sorry!