Earlier quoted context omitted.
IKEA doesn’t work online because of the cost of shipping on a per unit basis.
They have a flat charge, so if you buy a lot it can work. A lot of third party IKEA resellers on Amazon exist because of this (they basically run to the local IKEA to fulfill an order with better low volume shipping options).
They don't, at least in the UK. You pay a variable charge depending on what is shipping.