Keep watching out for them at eBay, specially from French sellers. These 80's pedals came with many Peugeots from the mid 80's, including my PSV.
Lots of them were taken off the bikes by their owners when the first clipless pedals (by Look) became the rave.......including me....so many of these pedals and clips, most of them with very few miles on them, fell into "junk" drawers in garages never to see daylight again till someone decides to dig them out to sell at eBay. You might not find the clips by themselves being sold but have to buy the whole pedal with clips if you do finally find them. Go for it, because you can use the pedals for spares, lest they become really impossible to find in the future.
Keep up the search and you will eventually find them.

Chombi
84 Peugeot PSV
85(?) Vitus Carbone 7 Plus