If history is any indication, the new Sidekick 2009 is going to be expensive. Hopefully not as expensive as previous models though. If you’re the budget concerned Sidekick user, now is the time to pick up a Sidekick 2008 while they’re cheap and still in stock. T-Mobile is running a web-only promotion that will score you a Sidekick 2008 for only $49.99. Head on over to T-Mobile to check it out.