Good job posting an example that is only available in roughly 15% of Best Buy stores.
As for information being known by employees, Sinned is correct. Best Buy does not tell employees information for high value items. It would make no sense. If I knew how many Touchpads were coming in and when, I could easily hide them for myself. Or even worse, I would cause a ruckus when I tell a customer "We should be getting 10 tomorrow afternoon."
They did the same thing when iPads came out or when Black Friday rolled around.
And speaking of bad information, here's the situation. Most employees do not tell facts, they tell you blank information. As in they mention information with no value whatsoever. The customer would then fill in the blanks. It works real well when they don't know anything about a product. So yeah, blame the employees for this 'inception' type sales tactic, but blame the customer for making up BS.
An example would be "Yeah, Samsung makes a great fridge. We never get returns." This information is true, but has no information about the product. The customer then assumes that this particular fridge is an awesome fridge, and that it has awesome features that no other fridge has.
Other examples include "LED TVs are really thin and bright"
"This product doesn't have great reviews"
"If you want to take great shots, this camera is great"
"This model has been real popular lately"
Probably going to get flamed for this post, and I'm not defending anyone, just explaining what's up.