Our Ikea kitchen was about $3k for cupboards. Not including benchtops which we got elsewhere. They have a 25yr warranty and use Blum hinges and soft close drawers ( we have mostly all drawers which always pushes the price up)
I would buy another Ikea kitchen in a heartbeat.
I had a quote from a kitchen company and was told there was no way they could do cupboards even in the cheapest laminex for under $10k and with ikea we have Vinyl wrap.