I don't mind as they are relatively cheap. At least they don't cost full os program prices.
Fortunately there are lots of review sites out there that give you a fair idea of an apps worth. Padgadget, Appspy, Tuaw, Touch Arcade etc..
The ones i usually delete are the impulse buys....
Just out of curiosity: Which app was that?
I just bought my first one and it was supposed to track any cell phone number and tell you where it was (if on). All it woudl do was point to where I was. I put in 5-6 cell pone numbers and it only kept pointing back to my location. Didn't have a menu, either. Pretty usless even though a couple fo reviews said it worked for them.
Oh well...............