Same here. One thing to think about is that the floor is very important. I paid $4500 10 years ago for my 30x50 floor. You are thinking that this is too much? You have to consider all the sand they bring in to get it at the right grade with your driveway. And if they do have to bring in a lot of sand you need the burm of clay around it. I ordered the extra fiberglass strands right in the cement mixture. I have one small crack. The good thing is the fiberglass in the mixture will allow some flex and the cracks will not separate.