I couldn't resist replying to your post with a couple extreme examples. My daughter and I used up a set of front brake pads on a single tank of gas which was likely less than 200 miles. My wife routinely gets 125,000 miles on the front pads of her 604 Peugeot.
It is all in how you drive. I should explain that when my older daughter and I used a set of pads in less than 200 miles we had our 2.3-16 at Summit Point Raceway. She would drive for 20 min, park the car for 20 min then I'd drive it for 20 min, park it for 20 min and so forth. I was using 1/4 tank of gas per 20 min run. She used a bit less.