I've stayed at every level of resort over 20 trips and never spent 45 minutes on a bus, including DME.If you rent WBC through a third party it is much cheaper than that.
Disney transportation is abysmal. Slow, crowded, and inefficient. I'd much rather drive 15 minutes in my car to a park or TTC than spend 45 minutes or more on parks transit. I'll also take my savings to the bank. To each his own though.