I can only talk from my experience.
I am a kind of person that looks for style, I don't care if it is cheap or custom made. Sometimes you can build a custom made kitchen that costs more than 10K and it looks cheap or cheezy or old fashioned.
Most of the times I use white Ikea kitchens , they can look quite expensive.
HomeDeport White builders grade at $99 look too cheap, the brown ones not so much. Rona sometimes has brown maple doors cabinets for $99 a piece.
I find paying 2.5 times more for better quality is too much, does that mean, if the builders grade cabinet costs $99, the bigger quality would cost $300?
Home Depot has better quality cabinets for 10/20% more in raw oak, but you have to stain and varnish or paint them. Rona sells them already stained for the same price in Maple. Yeah, kind cheap quality but it looks nice.
My tenants pay more for looks, it does not matter if it's expensive or not.
I do not know about HD or Rona quality yet because i only have them for 1 year. IKEA ones I have them for 7 years with no problems as long your kitchen sink does not have leaks.
If you were to flip and sell, that would be another story. There is a thread on this forum about it, and it talks about IKEA and HD.
I am thinking about starting to flip houses for Rent to Own and I might continue to use IKEA kitchens unless HD or Lowes has cabinets for the same price and as good looking.
Filipe