Sadly, I only have the one Macbook, so no second machines around. And I won't touch third-party, no. And I don't have a car to be driving around multiple places, sadly. I hit up Best Buy in the hopes they'd have some open-box deals (they had some for other accessories, but sadly none for power adapters).
So $85 after tax it was.
Only upsides: the other one had been patched twice over with sugru and I can now leave the AC adapter half of the old one in my bedroom rather than carting it all back and forth each night.