memes

There is often a big difference when you're willing to spend more and do the research to ensure it's not just a cheap product dressed up in an expensive price for a wide variety of things. I'm not familiar with that particular brand but it is very possible that that second hand blender is still significantly better than a brand new $20 blender.

Another commenter mentioned the motor, but also the way it is put together can drastically affect how easy it is to clean or repair if some small part wears down or breaks, which is also less likely to happen because the materials are both more robust and there's more of it used.