I have 2 EDCOR XPWR107-120 which can be used to build a ZKIT.
I purchased these with the intent to build 2 ZKITs but eventually went full point to point and tube rectified, so I didn't use these.  They are new in original boxes.  I also have an extra set of end bells I will throw in free.
Photos:
https://photos.app.goo.gl/AfCpKDhYCddxs8is9
https://photos.app.goo.gl/jR99seVyRjAq2MK78

Avoid the 8 week build time on these and save money!
$65 ea. shipped CONUS or $120 for both.

Manufacturer specs here:
Primary (input) Voltage  120Vrms or 240Vrms, 50/60Hz.  
Secondary (output) Voltage  600V(300-0-300)@150mA & 6.3V@4A  
Bobbin Material  Nylon 6/6 GF-30  
Flamability Rating  Class B 130°C  
Core Material  M-6 29 ga. grain oriented lamination steel  
Secondary Insulation (transformer)  Clear air dry polyester varnish  
Termination  UL1015, 18 ga. lead wire  
Mounting  Powder coated steel end bells  
Color  RAL 5010 Gentian Blue  
Weight  6.75 lbs.  
Compliance  RoHS & REACH  

Im assuming these have been sold?
If not, I would take both.