Where can I find the best deals on Kia vehicles?

I am so frustrated right now because I have no idea where to even start with buying a car. My logic was that I could just look at the Kia website and find a price but then I go to a dealer near Seattle and they say something totally different. I feel so stupid but I dont get how people find those cheap monthly payments you see on TV. My budget is around $25,000 for something like a Soul or a Forte but every time I talk to someone the price goes up. Am I supposed to be looking at a specific website or is there like a trick to this? I need a car by next month for my new job and I am just stuck...