As someone else said - It depends on a lot of factors. Most likely you will have some excess skin hanging around. How much depends on your specific scenarion.
I will tell you that as I am losing more weight, I am caring more and more about my appearance - some may even say developing some vanity. I am a little less than my halfway point right now and the loose skin is starting to bother me some. I look like the michelin man after being thrown in a microwave. I have loose skin already under my arms, on my inner thighs, my butt, and my stomach.
I am thinking a lot about plastics and beginning my research. I have found that it can cost anywhere from 12 to 50 K. The recovery times are long, and the scars take even longer to heal. Seeing 6 week before and after pictures of men with similar backgrounds to mine, I would stil be ashamed to wear shorts after. Based on thes pics I have seen I would go from looking like a microwaved michelin man to Dr. Frankensteins monster. A circumfrential scar around my hip line, y shaped scars on my inner thigh - it wasn't pretty.
Most places require you to wait a anywhere from 6 to 18 months after entering maintenance to consider plastics. They want your skin to retract as much as it will as well as seeing that you have reached a stable weight. Exercising to increase muscle tone can help a lot as well. Adding strength training to your cardio will help tighten the muscles and hold some of that skin in place.
I didn't think I'd come out of this looking like a male model or movie star. I went into this wanting to live a long and happy life. But looking like a movie star would be nice...