Exarch,
The HVM I have at Ghundy Ghar is a 14:1 return ratio (14.38 to be exact)
I've got an unlocked HVM that shows up a few levels after where you're at (you have to unlock another location, Arghanhab) that is 17:1 return (17.53 actually)
I just unlocked that one tonight, and based on my level and experience, it's starting percentage is 98% success.
This is pleasing.......means that with my 430 CR's, I'll be able to get 7538 points instead of 6192... a considerable improvement.
I have a mission that is a 22:1 return ratio unlocked, but it's a 52% chance of success right now (started at 28%!!) The average rate of return for that would be 9460 points for my CR level, except that the 6 times I've tried the mission so far, I've had about a 2 successful missions.....so the 354 points I've expended has returned for me only 2608 CE's....or a real rate of return of 7:1.....not so good. I'm thus avoiding that mission 'til my skills climb to the point that it's a 90+ percent success rate....else it's a waste of CR's
NS