You get 3 files with the download: TIF, JPG, and PDF files.
Each give a detailed section of Mars (a long valley/trench-like sector).
Each part of this sector is claimed by various countries fairly similar to todays countries (Chinese Heartland Republic, Brazil, Japan, United States Reformation, European Union, Russian Federation, etc).
Very tempted to use this for my own RPG system.
The PDF file seems slightly slow loading (background, then planet, then the valley section), but it is rather detailed.
At £0.76p/$1.00 it's worth the purchase.
NOTE: it does not detail vevery part of Mars, just the valley section.