Driving in the winter usually means scraping ice off a windshield while your breath freezes. A remote starter lets the engine warm up and the defrost kick in while you stay inside. It is a small upgrade that makes a massive difference in how much you hate your commute from December to March. Buying one in late summer is the smartest move because shops are quiet and you can usually talk them down on the labor cost.
A professional installation usually runs about $450 for a reliable system. Instead of dropping all that cash at once, we can use a specific card window to break it into small monthly chunks. This way, you get the work done when the shop is empty and pay it off while the snow is actually falling.
The intro window is a firm deadline, not free money. If you still have a balance on the card after the 15 months are up, the standard interest rate will apply to whatever is left. That interest can quickly eat up any savings you found by shopping in the off-season.