An established adult that is tame will always be more money. If you dont handle it and leave it for display only, it is a pretty good bet that it will tag you every time you reach around it. They are in no way naturally nice. Just remeber that you WILL HAVE TO move it when the cage needs a good wash or changing cages. Its not something you can lock away and just look at forever.

Be cautious. Everytime I say I wont get that til whenever I will run across it and then own it. Everyone on here will tell you that snakes are addictive.

The only reason I would say have another snake first is you can learn from it about yourself. Meaning even a bp will move quickly from time to time when your dealing with it so you can see what kind of startle response you have. With a gtp they will strike at you and if your not used to how a snake can move quickly at or away from you it may catch you off guard and you may by accident drop the snake. Its not natural for a person to stand their ground and let a snake bite them but many times that is just what you have to do with a gtp. Many times I can see it coming but cant do a thing about it other than take the bite.