u/Empty-Note-8768

More or less the title, but my tempurpedic is currently on their tempur-flat foundation, and resting on a no frills steel frame. My dog is getting older and struggling to hop on the bed like he used to, so I'm looking for a platform bedframe that will keep the mattress low to the ground, but I see lots of people online that are adamant about needing a foundation for memory foam. Looking for suggestions on frames and firsthand experiences of ditching the foundation.

Friend of a friend has a 2006 Toyota Corolla with no accident history, no known issues besides a wacky bumper sticker, and 166k miles. Has new tires and may need a replacement windshield wiper tank and some carpeting. Would you buy, or pass on it?