The question is, what did you order to make it worth it? Try as I might I can't find anything on boxed that's even a little bit of a deal with or without the amex offer (aside from stamps but I'm already inundated with stamps )
this has been debated over and over again. many, myself included, manage to find several items that, after at least 33% off, are good deals. if you cant find them, shop where you seem to be getting your great prices