DNF is worth $10, yes!
While the beginning is ON and OFF; and the story and character depth is nothing to write about; and the graphics looks 5 years old - once Duke leaves The Lady Killer, the game, for the most part, is good.
The MP is a nice throwback to the "good old days" of MP - think like Quake 2 + 3; UT days; etc. Too bad that there's a lack of MP maps.