No, it’s one of the more affordable options, however there are some silly priced steel frame sets about i.e. Condor
No your getting what you pay for, Dedacciai SAT 14.5 is a decent tube set, it isn’t the highest in the range, EOM16.5, but it is a tad bit better than no name gas pipe that gets used for cheap steel frames.
There was a time that people actually looked at the tube set and looked at what was being used for head tubes chain stays and seat stays, these were always the tubes where corners got cut.
Steel is not just steel, look at the tube thickness the profiles it all matters.
Why are steel road frames so expensive?
Why does a Cervelo cost more than a giant? a bit of you charge what you can, a bit of scale, Steel is now a niche product, most road bikes are now Alu or carbon, rather than 531.
If you want expensive steel look at Pegoretti Marcelo’s, Colnago Masters, Cinelli Supercorsa’s. those are expensive, are they worth it? i guess worth is always subjective. I’ll just make do with my Lemond Platinum OX framed bike.