Non-smartkey for 2007?

Just got a 2007 and have run into a small problem. I live in an apartment with tandem parking. Part of my lease is to give my landlord a copy of my key so she can move my car when she's parked in (which happens about once every six months).

I really don't want to spend $250-300 on a new smartkey that will be used maybe once or twice before we move in the fall. Is there a cheaper alternative? Does anyone know if I can get a non-smartkey fob that is just the remote and transponder, but not the smartkey?

Thanks!