If I came from a place that paid $50k, I'd expect them to be able to give me a small bump but likely land me in the low-to-mid part of the range and I'd apply. If I came from 75k I'd expect higher end of the range, and I'd apply. That could be unreasonable depending on how they place different tiers of engineer on that range, but if it is then it's better to split out the jobs by title (Software Eng Jr./Sr/Staff/Principal). If I came from over 100k I'll pass because I don't think they can afford me regardless of title.
If I came from a place that paid $50k, I'd expect them to be able to give me a small bump but likely land me in the low-to-mid part of the range and I'd apply. If I came from 75k I'd expect higher end of the range, and I'd apply. That could be unreasonable depending on how they place different tiers of engineer on that range, but if it is then it's better to split out the jobs by title (Software Eng Jr./Sr/Staff/Principal). If I came from over 100k I'll pass because I don't think they can afford me regardless of title.