one of those, 2kw rated.. 53 pounds for 110$ after shipping.
that's a really good deal considering the core will cost you 3.30 usd/lb plus shipping at alphacoresdirect, and copper is 7-9 dollars a pound for new magnet wire.
the other, 2500 va, the 240/153 one.. also a very good deal, better than the other.
not sure about the triad, no information. does not look very large.
you may be able to find the midpoint of the 240 winding, snip the wire, then parallel them for 120 vac.
there should be enough copper from the 153 volt winding to rewind for a 13 vac winding.. whatever you need to make the inverter happy with the turns ratio.