Another thing to think about is how quickly a return can be had from co-doms.

If you purchase a male and put it to normals, you can get morphs out straight away.
If you get a recessive male, and then have to go the het route, can take years.(and youre still not guaranteed on the odds)

By the time you get visuals from this method, prices will indeed have dropped.
Yes co-doms will fall quicker, but you have a better chance of a return, much quicker.

Pieds have dropped alot in the last few years, and now seem to have stabilised for a while.