I just got a new peristaltic pump (Knight Pro Watch 510XT) so I no longer need the Rola-Chem I've been using for the past 9-10 years. It was used when I got it and now it has been outside in use for about 10 years. The tube needs replaced ~$20 and a critter decided to chew on the cord so that should be replaced too. I hadn't used it in over a year but I turned it on and it still works and it is easy to use.
I'd like to recover half the $ I have in my new pump but lucky for you (and me) I got a killer deal on it so I'm asking $2.00+shipping (free pickup in DFW).
*sold as is with no warranty and may have other defects not addressed above.