Hi, this is me again! you made me wonder about LADE so I went to their web site www.lade.com.ar
and they show the following schedules:
Dep Palomar at 8:30, returning at 20:30
Dep. Palomar 8:30, ret 18:50
There is also a flight on fridays that runs Bs.As-CRD-RGL-USH
-RGL-CRD-Bs.As. but my PC
wouldn't load the page... :p
Not sure about the prices though...