Purchasing new appliances can be exciting — that's one of those ways you know your adulthood is in full swing. Buying kitchen appliances often requires some research, though, because they tend to be expensive; you have to know if something is worth the money. Costco has some great kitchen appliances, and the appliance section in 2026 is filled with technology you probably didn't know you needed — from the Ninja SLUSHi that freezes drinks without ice to the De'Longhi automatic