Well my character is pretty old and I'm considering bringing in an even older NPC for plot jazz.  Though yours would be more 3-400, if we're talking Salem.

Here's kind of a problem I'm having, though.  His price is reasonable, I think, really.  [i]But[/i] because it has such a long time span it really won't come into play during the game itself.  That comes off as kind of unfair to me; every other player is going to be dealing with it throughout the RP, but you're pretty much safe from it.  Even if it [i]does[/i] come up, it'll only be the one time.  

I like the vein it's in, though.  A price of blood and fire, it works really well for a dragon based witch, I would just say that he should have to pay it more often, like monthly.  In fact, I notice that both of the witches already made have monthly consequences tied to the moon.  

EDIT: To be clear, I don't mean he should pay that exact price, but a lesser price more often, y'know?