Ah yeah, silly me, I used 32 gallons instead of 42 to the barrel. The group average of our estimates seems to be about $25/bbl which is as you said 15.7c. Plenty of upside to be had as long as crude stays above $50 long term, which seems likely.
Not quite the same profit margin as at $148, of course, but let's not be greedy. ;)
