That is a lovely pic of a Panda Piebald!
Oren is right, the ball python morphs can easily get in the thousands of dollars. The snake you have pictured was sold for $18,000. One reason the prices high is because the clutches are so much smaller than corn snake clutches, there are other factors, but that's a big one.
As far as being easy or difficult to keep, they are not much harder than corn snakes. They just need higher and more steady temps so that can be a challenge. Ball pythons also do tend to have feeding issues. One of my males never missed a meal, but the other male and female are much more stubborn. All of my corn snakes will eat anytime, anywhere.
The colors are also really different. In corn snakes you get much brighter and vibrant animals. Ball python colors seem to vary less, you won't find a solid red, orange and yellow ball. What you will find are varying colors from yellows, browns, blacks up to white. IMO the piebald and all the piebald mixes are the most beautiful snakes hands down. The albino piebald "Dreamsicle" is my favorite by far. They have plenty of morph variation, it's just different from corn snakes.
Here is my fav BP morph site:
http://www.worldofballpythons.com/morphs/
Personality wise they are pretty similar. 1 of my ball pythons is much more active than my corn snakes. The other 2 are middle of the road on activity. My largest female ball python is actually named "Kitty" because she wants to be on my lap all the time. She begs to get out of her tub and will ride around on my shoulders for hours. I swear one day she is going to purr. I also have a corn snake that's a lot like her.
As far as which I better my vote is a 50/50 split. I lean more towards the ball pythons from a breeding stand point because the babies are so freaking adorable. Big goofy peanut heads and they are less wiggly than a pile of baby corn snakes.