What is a price that would be a good time to pull the trigger on a Chevy Malibu LT 2013 with between 15 - 25k miles?

Depends on the dealership, salesman & how much knowledge you bring to the table. Check KBB (Kellys Blue Book) for the value of the vehicle that you have in mind. Also tell them that you want the Carfax to see if it was ever involved in an accident. You can do a lot of research yourself if you get the VIN #. Good Luck !

Also , don't be afraid to shop outside of your state.

You'll always get your best price on the used vehicle the dealer has had longest on the lot; we tend to get nervous when something gets 90 days old. 180 days old or older and it's panic time: "SELL IT FOR WHATEVER YOU CAN GET!" There are lots of used Malibus out there, so take your time and find the right deal. That means consider EVERYTHING- it's not a good deal if the dealer requires you to buy a $1999 rustprofing package or they're charging a super-high interest rate. You should also be looking for Certified Pre-Owned: more and more Chevy dealers are dropping it for their own in-house programs because of its expense and it's an absolute PITA to administer (the paperwork involved is insane), but it's a great program for the consumer.

If you find the car you are happy with, can afford it, and are OK with the price, like above stated, do you homework, know the going price. Options add money. Sometimes dealers break even after all expenses, or make just a little money. They are the sales experts, and also know where your bottom line is. If your happy, take it. You will not regret it. The last car I bought, we knew our bottom line and what the dealer was trying to sell it for. New but dealer used. We walked in, asked for the vehicle, asked their bottom line price, made a counter offer, and got the vehicle. We were happy, no hassle, and they were happy to sell it. Win-Win.