If i recall it was 150 for the brick,and 35 for a replica. You could get two different types of replicas. One was wood looking, and the other is clear acrylic. We have the clear one sitting above the computer. the 35 include shipping if i remember correctly which was nice. You also receive a certificate and that includes your bricks location. Ours was just installed the last few weeks (we got one of the new 50th bricks) and it's right in the center by the entrace to DL. We had found it earlier, and i was showing my sis later in the evening. I walked over to the section and said it's around here somewhere. Looked down and I was stepping on it.
The bricks are located in the plaza area between DL and DCA. You don't have a choice where the location is. You order them, and if you do it on the phone they will tell you when your brick will be made. They will charge you when they make the brick. We ordered in December, and weren't charged till the end of January. They will also tell you when it will be installed. Just before they make the brick they will send you a leter. It will have a picture of what your brick will look like. If you need to make any corrections you only have a few days before they are supposed to be made. It will also tell you the location. If you haven't signed the waiver it will also come at the same time, and needs to be returned before they will install your brick.