Yes, this place is a little expensive for a hot dog, but dayum they make good hot dogs.
I had a Locavore dog (all-beef mad from local grass-fed organic beef) on my Chicago Impostor and it was delicious. It'll make you think twice about the kind of hot dogs you buy in the grocery!
My only complaint is that Franktuary should diversity its bun options, there's a new place in DC that has a variety of good buns from texas toast to pretzel rolls!