Maybe I'm off but my experience skews your scale a little bit
Entry Level can be as little as $100 but to move to mid tier it's more of a range from about $700 to $2500 for with the a few standouts in there but typically the more expensive DACs sound significantly better.
Top tier doesn't seem to have a price range. It's a whatever the market will bear kinda thing and I haven't got there yet but when I spent $1000 on a DAC I t was really naïve thinking it was a end point not a entry point. YMMV