Not a lot of content, but definitely worth a buck.
Not a lot of content is subjective. If you are a completionist - getting the secret gems and stealth awards in all the levels, it easily takes upto 5 hours.
More importantly, this game is a gem for it's take on stealth genre. An amazing game through and through.
I have all available games from Mobigame and imho they are all worth their full prices. Brilliant, extremely polished AppStore gems. Apart from Truckers Delight Ep.1 they are all universal apps so that makes their full prices even more attractive.
Favorites: The Quest Gold + expansions, Mission Europa Collectors Edition, Ascension, Jet Car Stunts 2, Junk Jack X, King of Dragon Pass, Kingturn series, Mecho Wars HD, Mini Dash, Mos Speedrun, Ravenmark, Sonic series, Fall of Angels, Highborn, Solomon’s Keep / Boneyard, pixel art games, remakes and ports of classic games.