How long after the price drop did you call them? I too bought a refurbished 4 GB iPhone
one week before the price drop. I called Apple the day of the price-drop announcement,
and I told them that I would rather have an 8 GB phone for the same price; I was then given
an RMA number, with the understanding that I would have to pay a 10% restocking fee.
Since I had some extra cash handy, I immediately went to the local Apple store and
bought a new 8 GB phone, and returned the 4 GB one (I was given a link to a free Fed Ex
overnight label to print). I was very happy to double my capacity, and also get a regular
retail box for an extra $40.00.