I just got 100 Black 1/2 pint chinese take out boxes for $15.00 from ULINE.com for our candy buffet. You can order them online and go pick them up at their warehouse in Coppell to avoid the $9 shipping cost (that is 5 minutes away from my office so it was definitely worth it).
They have a few different colors as well as regular and mini gable boxes too.
Just wanted to share since they are 89 cents+ each at Michael's and Hobby Lobby!