Well these are all European products, so yes if you are in the US it's probably cheaper to buy them from IKEA. In Europe you can get the non-IKEA branded version (their appliances are made by Electrolux AB, which has many brands such as AEG, Zanussi, etc) for cheaper from any home appliances store.
For example, I am buying some stuff specifically from IKEA, because: 1. They provide longer warranty 2. It's cheaper than the non-white label alternative (looking at you, Blum furniture fittings for example)
I need a super good reason why my next gas stove, oven and dishwasher are not from IKEA.