When I was shopping for my 2011 journey my dealer told me the same thing, that Chrysler had lost a supplier and was having issue with getting remote starters. I ended up buying the crew model which already came with the starter in the package. In reality if your looking at the sxt with the convenience I package because of the starter you might as well spend an extra 1000$ and upgrade to the crew. It not only comes with the starter, but also includes, 19 wheels, hearted seats, dual climate control, electric seats, DVD, USB, Aux, memory card slot, satellite radio and 8.4 media screen. Small price to pay for all those extras.
Hope this helped.