You want a webcam that makes you look sharp on every video call and lasts for years so you only buy it once. High-end gear rarely drops in price, but back-to-school sales in late summer bring some of the best discounts on tech.
Webcams don't change fast, meaning last year's model often has the exact same sensor as the new one for a fraction of the cost. Check if older versions are marked down before paying full price for the latest release.
Just remember that the 0% intro APR for 15 months on purchases and balance transfers is a hard deadline, not free money. If you still carry a balance when those 15 months are up, interest charges will kick in on whatever is left.