Yeah he has a good pattern and a good amount of white, so as long as the wobble isn't terrible and all other health signs are good, then go ahead and take it.

But remember sometimes the reason for selling a snake is not always because the owner has too many animals, he might be a terrible eater, have another issue or illness, etc. So make sure you ask a lot of questions and get as much history of the snake as you can.

In my mind, if you can't answer my questions, I don't want to purchase your animal.