A good portable monitor lets you work from anywhere without squinting at a tiny laptop screen. We want something durable enough to slide into a backpack daily and bright enough for working outside, so you buy it once instead of replacing a flimsy one next year.
Tech companies drop new gear all the time, but the sweet spot is waiting for back-to-school season. That is when retailers slash prices on last year's exact model, which gives you the same performance for a fraction of the cost.
Just remember that the 18-month window is a hard deadline, not free money. If you still have a balance left when those 18 months are up, deferred interest or standard rates will kick in and wipe out your savings.