Not only a Quark episode but we finally get our first Ferengi episode with the introduction of Grand Nagus Zek who is well played by Wallace Shaun. Theres a good bit of fun fluff with the Zek faking his own death and we get a good comedic episode.
The main part of the story watching in hindsight however is Jake and Nogs developing friendship - seriously I started this episode delighted to see Zek yet as it goes on I wanted to see more of Jake and Nog. This relationship between Nog and Jake is one of the centre-point relationships of the show and seeing it start from nothing is beautiful. Of note is Sisko's reaction both to Nog as a bad influence and the ending when he finds out what the pair have been up to.
In short, a delightful little comedy and character episode thats important to the show in multiple ways, 7/10.