When I worked in Navy public affairs at the Naval Station at Great Lakes, Illinois, I was privilege to meet quite a few of the remaining survivors of USS INDIANAPOLIS when we named a major facility (the combat training pool at the recruit training command) after the ship. If you think a cancer diagnosis is a life altering event, I asssure you it pales in comparison with what these gentlemen went through....probably the worst disaster at sea in the history of the U. S. Navy.
As for the VED question, I spent about $14 bucks at a nearby adult bookstore for a device that seems to work just fine. I only use it for "exercise," not to try to maintain an erection for intercourse, but I don't see what an expensive device would do that this one doesn't when it comes to getting blood into the penis. Unfortunately, from what I've read, the blood that is brought in when using a VED is not the arterial blood that is really needed.