I was trying on jeans today and they were all far too long! I did find some that I like, but after I've washed them I anticipate they'll still need shortening and inch or two, as I will wear them with flats.
I always think it's a pity to shorten jeans as they usually have some kind of wash or finish on the bottom (if you see what I mean).
The thing is, I'm 5'8"1/2! So if too-long jeans are a problem for me, I expect they are for most women!
The brands I was trying mostly didn't have different legs lengths either.