I worked at a Best Buy throughout my college career, so I know all about what the employees go through with the upsells, accessories, warranties you name it. Yes they aren't on commission, but not getting berated by your higher ups is commission enough sometimes.
I came in the other night because I was eligible for a phone upgrade this week and wanted to check out some of the accessories for the iPhone I had been keeping an eye on. I told the guy in the wireless department I was just checking out accessories when he said he could put everything together for me and set it aside for the next day. He entered my phone number into the computer and it turned out I was eligible to upgrade right away! I already had a case and screen protector, and it turned out if I bundled it with a car charger it was a considerable savings. He went through the motions on the warranty sales (including the "buyback" program) and was very upfront that this was merely information that he was required to tell me (which I understood), and I in no way did I feel I was being excessively pressured.
While the whole transaction took nearly an hour (I had signed up for $50 off through an online promotion they had last month), I was happy to wait since I was sure I'd be stuck with my broke down POS android phone for at least another day. I was very happy with the experience, and would process my phone upgrade through this Best Buy again in a heartbeat.