Don't know how to answer. The bike lockers at work are free. You do have to tilt the bike to get it in. Only things I have noticed to watch for:
1. when back in, if not careful can turn on some tail lights
2. some positions in the sun get very hot, and may lead to premature tire/tube failure.
3. lock choices are slim as the holes are small.
they are great for a place to store all your junk. i wouldn't commute without one, or a room I could pull the bike and junk into.
Curious, what does the rent on a locker cost?