I picked up a pair of pants from Out of the Closet thrift store last week. For six dollars, they seemed good enough for the sartorial demands of my casual life. However, they were a bit short. Not drastically, but short enough to have a vaguely Pee Wee Hermanesque flood quality to them.
I ripped the hem out. There wasn't enough material to lengthen the pant leg and keep a proper hem.
To address the issue, I used some bias tape I scored at a local yard sale a few years ago. I machine stitched the bias tape on the raw edge, created a half inch hem & hand sewed the hem. The hem looks neat and keeps the length. Now I have a new pair of pants for a fraction of the cost.