It's unclear what class of docking station you want, from a quick search you can get one that just charges the iPod for under $20 but do you also want it to have speakers to play music while docked?
If you just want to charge it, almost anything should work fine. Otherwise you can get an alarm clock dock that plays your music to wake you up, a juke box style that has speakers and fills a room....
I have checked in stores, and they have just shaken their heads sadly sadly re iPhone docks. It seemed insane to me, but I've not had time to challenge them!