A good mesh Wi-Fi 6E router kit fixes dead zones and keeps dozens of devices fast at the same time. You want a system that will last five or six years so you only buy it once.
Tech gear follows a predictable release cycle. When the next generation hits stores, last year's top models drop in price even though they are still more than fast enough for your home.
Remember that the 0% intro APR is a deadline, not free money. If you still have a balance when the 15 months run out, standard interest kicks in on what you owe.