It’s easy to rent a truck and labor, but it’s also $200, so there goes your savings. ( And I just rented labor as part of my move, so I’m not pulling numbers out of the air.)
I completely agree that if you find the right deal at the right time, second hand appliances can save you money. I just can see why people, including myself, don’t do that. It is much harder to arrange for a lot of people than marching into Home Depot.
I’ve never, ever spent $1k on an appliance though, because I look for basic models with less stuff to go wrong. So if I spend $600 on a Craigslist refrigerator and $200 to move it, I’m back to the price of a new fridge but with no warranty.