About 3-4 hours gameplay on the hardest setting
First the gameplay. Decent graphics, a resonable mix between hidden object and puzzle solving, possibly a little repetitive. The game does lead you by the nose a bit, with different rooms only being available if there was something to do there.
Second, value for money. playing with active areas not highlighted, and having attained two of the talimans (there being seven) in the 60 minute trial period, I thought that maybe the later ones would prove harder and so spending $14.95 would be worth it. Sadly the later ones proved easier if anything, the complete game taking me about 3 hours in total (with no hints). You decide whether that represents good value for money.