Yes I see what you mean now. Of course it would be important to know that sooner rather than later. But I suspect if you are paid that little, you would know it from industry averages. But awareness of how screwed over you are is not going to make you happy. If you can be paid that much less than the next guy and not know it from industry averages, you should probably be able to guess it.
At one job where I was perhaps making 70% of what my coworkers did, and I found out a couple of years before I was able to leave. It did upset me a lot. I knew I was underpaid before that because of how other companies paid, but knowing specifics definitely rubbed salt in the wound. I suppose knowing specifics might be a necessary evil but I think back then it might have been better to not know. On the other hand, that experience set me down a path that eventually worked out ok, so I can't really say I wish I didn't know.
At one job where I was perhaps making 70% of what my coworkers did, and I found out a couple of years before I was able to leave. It did upset me a lot. I knew I was underpaid before that because of how other companies paid, but knowing specifics definitely rubbed salt in the wound. I suppose knowing specifics might be a necessary evil but I think back then it might have been better to not know. On the other hand, that experience set me down a path that eventually worked out ok, so I can't really say I wish I didn't know.