A high-quality modular keyboard is an investment in your workspace comfort. By choosing a board with hot-swappable switches, you can repair or upgrade individual parts instead of replacing the entire unit when a single key fails.
Wait for the November sales to see the best prices. Tech brands often refresh their lineups in early autumn, so look for last year's models that offer the same build quality at a much deeper discount.
That 18-month window is a deadline, not a pass to pay later. If you still have a balance once the time is up, you will start paying interest on whatever is left, which defeats the purpose of the plan.