re: How much to get a 20 x 10 concrete patio?

One thing to consider is that ready mix companies usually have a 5 yard minimum order unless you have a friend that works there who can get it waived. Of course, they don't charge that to high volume customers but usually are pretty strict on your average Joe COD paying homeowner. He might pay $550 for 5 yards of concrete but they will only need <3. Still could do it for $600 with tool rentals even if done himself.