Make sure they know if u r in a hurry.  Was disappointed bc I called ahead and gave very specific directions (Please make sure the 3 dozen bialy's are in plastic bags bc I need to pack them in my suitcase.  Unfortunately, they were not and I had to make the taxi wait...  costing me more money.  UGH!  In the long run, it ended up costing $72 for 39 bialys (including taxi)