ordered some purely decorative PCBs and scaled it up between revisions because Kicad was messing up the scale on the original import, making the file 3cm across instead of 4cm.
Now that I'm done paying and am in the waiting stage I feel like... maybe Kicad was right and I shoulda gone with 3cm all along.
I guess I'll find out in a few weeks!
That said because it was all being designed outside of a cad program I wasn't sure how the scales would play with the manufacturer tolerances - the first revision went from the quick quote of $60 to a human-revised $92.57. So I assumed maybe I went too small.
Maybe should have tested with another 3cm upload file. The 4cm one went DOWN in price with the same min track => 10/10 change.
I don't know why these changes would trigger a $32 increase? They did drop the build time but I didn't ask for that @_@
Alecat