The write-up should have made it clear that these are grounded in Construct creation and thus magic powered.
In which case, well, Goldfish said it better than I,
All I've been trying to say is that the pricing used is much too low based on standard D&D 3.5/Pathfinder item creation rules. That's not a matter of compromise.
The Steam and Sorcery book is giving insanely low prices to accomplish things that are already outlined in non-third party material.
They need to operate on the standard magic item creation baselines, and I'm sorry TNE, but the negative side of things that have been stated just aren't enough to justify the pricing insanity. I have no objection to magical power armour as a concept. But it needs to actually cost what it should. The way I see it, magical power armour should function similar to the artefact suits that we have an example of from Pathfinder. You
could reverse engineer them, yes, but it'll cost a small fortune. This sort of gear is endgame stuff for a high level party, and it
should be. Otherwise the entire foundation of fluff around the multiversal empires and how they fight wars just implodes.
I wouldn't be comfortable with pricing these sort of things below a significant portion of WBL for a character in the 17-20 level bracket. Anything less, as I said before, invalidates the idea of standard magical as a concept.
If we want to make power armour for like, a handful of small squads of elite Praetorians? Sure, I'm fine with that. But the prices listed in the writeup would allow for mass production, and that breaks
everything. The Legion is already skating on the edge of that, to be quite honest. Project Praetorian on its
own is skating on the edge of that. Combine the latter with power armour, with the listed costs from Sorcery and Steel? I repeat, it breaks everything. Mechanically and fluffwise. These should be treated like the artefact level items they should be. Not...well, look. The Warden armour would set back a party with a crafter bitch 80,000 gp. That's....a fifth of a level 15 character's WBL. There is
literally nothing better for any character that doesn't rely on Dex or has to suffer ASF than that.
The fact that I can say that straight-faced is not a good thing.