We're ready to stock up on fall sweaters, but we don't want to spend too much money while doing it. Thank goodness for Amazon — the online retailer has a massive selection of knits at insanely low prices. Whether you want something loose and comfortable or colorful and statement-making, we've got choices that will totally impress you. Take a look at our favorite options under $25 and score a few before they sell out. With deals like this, we have no doubt they'll be gone in the blink of an eye. What are you waiting for? It's time to shop!