I got Corian from them when they ran a special. It was 40% off counters if you buy a kitchen from them, and that was a deal we could not refuse. They have installers they send out and it is just like any other fabricator, only you most likely won't get to pick your slab. Ikea sells mainly uniformly patterned granite because it is consistent and therefore simpler for them to deliver what the buyer wants.

Buying quartz or granite from ikea is just like buying it from any other big box store. Most of the time you're just paying a premium for the convenience of all-in-one shopping because they just contract it out. To whom depends on the store. Occasionally someone (like dianalo) gets a deal when they happen to have a sale, but usually I've found their prices to be very high in comparison to finding a local fabricator. Ikea is like any other giant corporation--they run on the bottom line and there's nothing special about the companies they enter into deals with for these sorts of things.

So if the price is extra great at the moment, I'd consider it. Otherwise not.

ditto.

ikea makes local arrangements with local companies; it's not ikea quartz.