It's not like B6 is only sending these deals out to subsets of their mailing list. Moreover, "who is the market" is a purely academic question IMHO: Knowing that the Day 12 offer isn't going to outrun the Day 4 offer for the same general set of trip options allows folks within the "target market" to behave in an optimal manner. Case-in-point elsewhere is a company which is running a series clothing specials. Well, my favorite line of shirts went on sale for 20% one day early in the series...and then went back on sale yesterday for 40% off. On the one hand, it's good I jumped last week (I'm on the boundary between sizes so I got a few of the larger size as a hedge), but at the same time there's an element of frustration which exists when stuff like that happens.

Truth be told, I'm not the target market...but only because of the fact that Mint seems to be generally excluded from them and I'm decidedly not in the market for a vacation package. That said, days 9 and 10 are of interest and I'll probably eyeball the fine print on them.