I'm pretty sure too that all 128Ks were made at Fremont -- it was a new production line dedicated to Mac manufacture, and it is unlikely that the sales volume required another one. I just checked a European spec 128K and it ws made at Fremont.

I think that $200 is a fair price for that one, but I'm basing that on UK/European rarity. The 512KB RAM upgrade looks very nice, and with the 800KB floppy drive, it makes a very usable system.