So I plan on heading to university in the fall and I am trying to figure out which computer/computers would be best for me. At the moment I am considering buying both a refurbished 21.5'' iMac (2011) and a refurbished 2010 11'' Macbook Air. My question is, once the Macbook Air line is refreshed in July, will the price of the refurbished 2010 Macbook Airs come down immediately or will they take a while to drop?