I finally confirmed there is 5x100 bbs sti wheels out in the world. Looking locally for a set before i order them online for way too much.
Correct. I've seen them going for north of $1000 for a little while now (depends on condition of course).
I guess in my hunting they came on some Euro only or JDM only GD WRXs too. Most of the pristine sets I've found were in the UK or Japan.