Contact the office (800.576.GMAT or
studentservices@manhattangmat.com) to ask how to get a replacement pen.
The scratch paper for the test is pretty much exactly what you have for practice (except, of course, it doesn't say ManhattanGMAT on it!). You'll have 5 legal-sized, yellow sheets of graph paper spiral-bound along the top. There are 10 faces but one of those faces will have instructions printed on it - so, really, you have 9 faces to work with, not 10.