How long do the refurbished models stay on the online apple store? I would really like to take advantage, of what i think is a great deal after reading all the forums and what meet my needs. I do own the aluminum mbp and iMac. So, I do not need the computer right away. I would like to see the possible netbook first. Do you all think the refurb mba will still be for sale in 3-4 months? Thanks for the help.