A projector and screen setup is the kind of gear you buy once and live with for a decade, so the goal is getting last year's model on clearance rather than chasing the newest release. Projector lines refresh every one to two years, and the gains between generations are usually small enough that January clearance on the outgoing model is the smarter pick.
At a $2,200 all-in price, the bill is manageable if you treat it like a short-term loan instead of a single swipe. The right 0% intro offer turns that cost into about $122 a month for 18 months, which is a lot easier to swallow than a one-day hit to your checking account.
The 18 months of 0% interest is a deadline, not free money. If there is still a balance on the card when that window closes, the leftover amount starts accruing interest at the card's regular purchase rate, which can be 25% or higher. Pay the full $2,200, or close to it, before month 18 and the intro period actually worked in your favor.