Thankfully, I quit cigarettes (cold turkey) back in September of 2005, but in the summer of 2010 my habit resurfaced in the form of cigars and pipes exclusively. Though I habitually smoked cigarillos at about a buck apiece, my humidor was stocked with some others (like the Trinidad) that cost as much as $48 each. The habit was crazy expensive, and whether inhaled or not, cigars and pipes make esophageal cancer (and other serious problems) a very real risk.
Now that I'm vaping, I've sold my humidor and given away all my tobacco which can't be attributed to my love of any one juice. I agree with chrisrook - there's no telling what might lure him away from cigars, as long as he's willing to give it a chance. Your best approach might be to try many different flavours yourself, and gently encourage him to try each juice you use every once in a while until you get his eyebrows to pop up in surprised delight.