For those paying out of pocket, buying used can save save 25% - 50% off of purchasing the product new. Buyers can expect a product price of between $500 - $1,500 for a used stair lift. It should be emphasized that unless one is buying from professional refurbisher, this price very likely does not include installation.
Definitions for res ipsa loquitur. res ipsa loquitur(noun) a rule of evidence whereby the negligence of an alleged wrongdoer can be inferred from the fact that the accident happened.
q.e.d. Abbr. of quod erat demonstrandum, lit. which was demonstrated; cf. res ipse loquitur (the thing speaks for itself), circumstantial evidence, the smoking gun by latlit July 21, 2003