It's not on the Portland cl site anymore. You need to look at every ad for a woman's bike because 80% of the sellers don't know it's a mixte or spell it mixtie.
I have bought and sold many mixtes that I have done frame up work upon. Currently restoring a 1960's PUG in near mint condition via ebay. The Motobecane Super Mirages are particularly nice. They were easy to find and sell this spring, but have all disappeared. The white Peugeots are in demand when they have touring bars, less so if blue or with drop bars. The specs on the MB and the PUGS are virtually the same, except there are many more PUGS from the 1980's that have the internal lugs rather than the earlier 1970's versions.
Raleigh made mixtes as well. I missed out to another BF member on a Super Course Mark II (531) in Montpelier, VT, kind of rough, but very hard to find.
Fuji mixtes are nice and light, but the Nishikis and Panasonics are rather bland. I have a Shogun currently for sale that is quite elegant.