I have been thinking of this. Why don't you suggest a few (a lot?) questions (with or without solutions but post them separatedly if you do), and we try to recreate something that would sort of look like the GRE? This way we would have another sample. The questions may be from you old Calculus book. It doesn't matter. Or you can create them. Whatever works.
EDIT
Here are my 2 cents.
These are videos with solved problems. They were proposed as an entrance exam to the National University of Callao. They are in Spanish but I guess that you can follow the equations in most of them. Ask if you don't understand, I can explain you what the questions are about. The questions really look like something that could be in a GRE exam. And, although most of them are mostly Precalculus and/or Geometry questions, they really require some ingenuity to be able to solve them.
https://www.youtube.com/watch?v=c1CYbfH ... hdkulSinPg
https://www.youtube.com/watch?v=KpC9MMC ... hdkulSinPg
https://www.youtube.com/watch?v=6WtKeGt ... hdkulSinPg
https://www.youtube.com/watch?v=DB11KPC ... hdkulSinPg
https://www.youtube.com/watch?v=ySwM4w0 ... hdkulSinPg
https://www.youtube.com/watch?v=8lOFMwY ... hdkulSinPg
https://www.youtube.com/watch?v=K49_QmX ... hdkulSinPg
https://www.youtube.com/watch?v=71vj0A7 ... hdkulSinPg
https://www.youtube.com/watch?v=XtzorUP ... hdkulSinPg
https://www.youtube.com/watch?v=B-MyZpW ... hdkulSinPg
https://www.youtube.com/watch?v=KpC9MMC ... hdkulSinPg
Here are some of the questions, as well
http://editoradelta.blogspot.com/p/callao.html