Sad thing is, they are probably doing it on purpose. They just did a little web surfing, picked out a cool picture and sent it to you.
I wouldn't be surprised if it was just a normal when you get there. If it were me, even if it isn't far away, I'd ask for another photo of the snake. It is obvious they are lying from the start, and goodness knows what diseases the snake may have.
Someone here learned that the hard way, she got what she thought was a great deal on an albino to help out a "military" family. Turns out the snake was very sick and even though she spent a great deal of time and money on it, her vet couldn't save it. So please be careful! If you decide to go see it and you have any other snakes, scrub yourself off and wash you clothes before you go near your snakes, even if you don't get theirs. If you do get it, quarantine it as far away from yours as you can!
I wish you the best with this, but I'd sure think long and hard before I went to see/get this snake.
Gale