Things I don't like about Zulily:
Items are not returnable. I even ordered 2 sizes since sizes from most manufacturers vary. Neither fit, and now I'm stuck with both.
Advertised items aren't offered for very long, so you can't take time to think about your decision and are more likely to make impulse purchases.
Shipping takes a very LONG time.
When you click on an ad for an item you like, it frequently does not take you to that item. That's because that item in no longer in stock... which they should then stop sending you advertisements for it!
Until you unsubscribe to the daily emails, you will be reminded daily of your wasted money and senseless purchase.