yes you will. it is still stealing(although your intentions are good). i would say as bad as it is let the snake go and just pester the sh*t out of him about his husbandry conditions. there is no sense in buying her, it just gives him money to go buy another one. thats why i hate to go into petco or any chain pet store and look at the reptiles because you feel guilty and want to help them but the truth is in 2 weeks they will just have 5 more in the same tank

let us know how it goes.
also do you know if the snake is healthy,Mites? feeding? no sense in bring a sick animal into your home and risking your pets.
Tom