so, in recent years inflation has had its effect on everything, from the food we need to survive, housing, interest rates and concrete and all the materials in concrete has caused the price of concrete to sky rocket.. in a few short years the price for 1cubic yd has doubled. so, for 81sqft @ 4″ you can expect to pay about $300.00, wood prices are through the roof as well as concrete reinforcements, such as steel wire mesh and rebar. So, if you’re a homeowner looking to have any kind of concrete construction/construction in general keep this in mind when hiring a contractor, the cheapest way is not always the best way.. I would take quality over quantity when it comes to decorative concrete any day, that goes for white concrete as well.. hope this blog helps