I went through this exact scenario with Saks recently but the bag was from 2008 and it actually looked like it had been used. I even asked if it was a display or return and my SA said, "no" it was just found in inventory along with several others (same bag different size).
In any event, I asked my SA to check with her manager to make sure it wasn't supposed to be marked down and they both confirmed that it's still regular price, albeit it was 2008 pricing ($2850 for something that looked like a jumbo with leather lining). I promptly returned the bag as I was not comfortable paying full price for a seasonal piece, that was 6 years old and looked used.
On the other hand, I have paid "full price/retail" for a bag that was pre-loved, just because it was no longer available in stores and I absolutely had to have it.
I hope this helps!