I managed to re-negotiate my offer to reach the (accidentally) advertised range exceeding my original (realistic) expectations and this is in huge part thanks to the helpful bunch of you here.

So: Thank you!!

And I can't belive that in a single fucking day I benefitted more from posting to devrant than all the time spent on toxic subreddits, calling useless recruiters, forums and others. Here, even those comments that I disagreed with were phrased in a reasonable manner and they also helped me formulate an apparently very strong argument in the compensation meeting.