With hubby's interest in food things and his Keto diet, we no longer buy general vegetable oil. We have Costco Olive Oil and Avocado oil, use avocado mayo. We also get a huge thing of Ghee (Indian Clarified Butter) from Costco on a regular basis, as well as butter for him, we've started buying the Kerry Gold expensive butter.
I'm not keto, I'm just high protein/low carb so I use very little oil myself. I was always just fine with my cheap margarine but since I've had to change my eating style, there really isn't much I use it on and the butter is convenient, kept on the dish shelf where the cat can't get it but it can be soft.