I love Tangerines and I couldn't walk by a box of them in Chinatown, still with leaves intact without buying some. There's something that cognitively suggests freshness and ramps up the desirability for me when I see leaves on fruit- I want them more. I grew up climbing fruit trees as a kid and remember the smell of the leaves that sometimes had a faint suggestion of the fruit itself. When I see them now, it somehow refreshes this memory and I'm investing in more than just the fruit. They don't last too long either. They get dry and brittle fairly quickly so having them still green and supple is a good measure of how fresh the fruit is.