You might want to contact Re-InVolt in Sanford NC. David Taylor is a dang good Prius technologist who I recommend to anyone needing a rebuilt, Prius traction battery. I have a lot of confidence in his abilities and service and you might be able to swing a sweet deal for a drop-in replacement although you might have to work any deal through a USA cousin ... if you catch my drift. <GRINS>
Better still, take a vacation to ... Cape Hateras ... <BIG GRINS> ... and stop by his shop.
FYI, there are a number of USA 'cousins' listed here:
Auto-Careers.org: Hybrid Training Resources Since 2000
The link "Hybrid Shop Finder" is Yankee for "Our USA Cousins."
Bob Wilson