I payed about 45 for the steel and 50ish for the mounts. I wish I would have made my own mounts and saved a little more money. I guess my total was around $100, but I didn't have to buy any other welding supplies or anything, I still had all I needed laying around. I don't have any pics of the floor, but it is pretty open right now. There are 4 bars running from the front to the back and that is it. If you really plan on putting a lot in there you may want to do a little different. I kinda did it to keep me from putting so much up there and to save weight.
High2by, I love it on there and this is my DD. I wheel it some but not like I would a trail rig so it hasn't been too bad on my COG yet. I know it has effected it, I just haven't put myself in a situation to feel the difference. That rack is actually light enough I can lift it up and take it down pretty easily myself. So the jack and tire are most of the weight. I guess it helps that I am 6'2" as well haha