This episode is alright, as far as Ferengi episodes go. I think I preferred Andrea Martin in the role of Ishka - I'm not sure how that opinion holds in these waters!
It's basically a continuation of some of the themes brought up in Rules of Acquisition, with a look at a female (gasp!) making profit. What an interesting take on culture.
But the silliness isn't as bad as things often got with Zek in the mix in later episodes.
And I'm agreed with the nice side story of Sisko going out with Kassidy. It was more interesting than the A plot, and probably could have made a more interesting episode. Though of course romance of the week could have then struck and given us another doozy.