Which one did you go to?  I just got new tires for the xB from Costco and waited two weeks after being told it would take 4 days.  I got fed up and drive down there, and they said only two shipped.  I had to ask them to check real fast, and what do you know, they had all 4..  They then made it a big deal as if they were doing me a huge favor to mount and balance them that day.  
I asked them to balance within 0 because nothing less than perfect for the wife right?  Took it to my shop and checked the job.  All wheels were off by a quarter.  Not happy with them.