On December 31, 2009, I purchased from US Airways an upgrade to silver status for 2010. I had silver status for 2009, but it would expire in March 2010. US Airways was offering customers an opportunity to buy up to preferred status. Customers who hadn't flown the miles/segments could pay the difference in order to receive preferred status. The cost for the number of miles/segments I needed was $579.00. At the time it seemed to be a good investment - prepaying baggage, upgrades, etc. However, when my 2009 status expired in March 2010, US... read full review »