Concrete

I am in love with concrete counter tops. They are heat resistant and anti-bacterial, and more importantly, beautiful. Concrete? Yes, concrete. Think Pottery Barn's cash register counters. Think chic and urban. Think warm. Yes, warm. Think endless color possibilities. I have found a few places that will make and install, but I don't know how much maintenance is involved. Does concrete need to be sealed often? Will it crack? (No, but I had to throw that in since everyone thinks of sidewalks when I mention this product). And then there's the price. Yikes!