Howdy all
Hoping for some help from Scotty and the community, on my 2007 Ford Focus 2.0 DOHC, 4f27e transmission i believe

My work moved me to Alaska for the summer, and I bought a clunker for the girlfriend, so she could get around town. It was always shifting hard and pulling a transmission code(p0762), but for 1.2k and only 100k miles, seemed worth it to try changing out the filter and the solenoids, maybe a little wrenching would improve a temporary vehicle.
Filter swapped, improved for a while, but then worsened. No lasting improvement after another filter swap when I replaced the solenoids. 

Unless I was the one putting the first 20-30,000 miles on it, it didn't seem like it would be worth the repair, so we put up with it all summer, but we've loved Alaska and decided to stay thru the winter, so now it's decision time on this vehicle. It will still occasionally try and shift up, but has basically locked itself into limphome mode and first gear, which works for a grocery store trip, but not really a commuter.

With this current used car market, is it worth it to replace the transmission?
Is there some magic bullet fix that I'm missing? (guess the clutch packs are removable without dropping the frame) or something gunking up the valve body that would be pretty easy to pull down, not sure how easy to cleanout and reassemble either though.
Or should I just be running from this car as fast a possible?

Used car prices definitely feel inflated, but extra so compared to the states, especially something more winter capable like an AWD Subaru.