Door Gym pull-up bar - Price: 15 in Northampton, Massachusetts

Door-Gym pull-up/push-up/sit-up bar in great condition. It fits any "standard" size doorway* and can be set up or taken down in two seconds. It is non-permanent (no need to drill holes), but is extremely sturdy and holds very securely in the doorway. It can also be used as a push-up bar or as a foot-hold for sit-ups. I disassembled it for my recent move, but I can reassemble it for you if you prefer.
* I'm not sure of minimum/maximum dimension of doorways it fits, but it should work with most residential doorways and college dorms (~7inches deep). It may not fit doorways that are deeper than ~10in.
(Same as this: http://www.amazon.com/Creative-Fitness-DG-Door-Gym/dp/Bxxxx9A7C0 )