Had an awful experience with IKEA's delivery service.
My roommates and I entrusted our purchased items in carts together with the IKEA delivery counter. Little did we know, promised next day delivery would turn out to be 3 separate deliveries dealing with missed and messed up items over the course of the following week.
The initial delivery was missing a bed, a mattress and received another customer's nightstand while they got delivered our laptop stands (sounds almost the same = same thing maybe?). My roommate had to rush home from work to be available 5-9pm 3 times last week waiting for the deliveries.
We figured if it's flat rate ($79) we should get every one of our purchases delivered. However, from this horrible and headache inducing experience, I recommend using their delivery service only if you really have to (ie. huge items like couches) or if you're not in a rush to get something.
I still like browsing the showrooms and will probably continue buying the furniture but the delivery service has left a bad impression.