A $25,000 car advertised online can look like a great deal until you sit down to sign the paperwork and discover the actual price is considerably higher. Taxes and registration costs explain part of the difference, but car dealer fees, accessories, protection packages, and other charges can push the total up by hundreds or even thousands of dollars. That gap is why shoppers should focus less on the eye-catching advertised number and more on what they will actually pay. Knowing what belongs on the bill — and what deserves a closer look — can keep an affordable car from unexpectedly stretching your budget.