I agree with the other post, and this may be petty, but if someone is rehoming a "Columbian" red tail boa on CL, I would be more inclined to believe they may not be as experienced and informed as I'd like them to be. The boa may not have gotten the proper care or quarantine when they got it..
However... If someone is rehoming a "Colombian" red tail boa on CL, I'm more inclined to believe they may have more knowledge about their care and therefore the snake may have been properly cared for and is not sick..
Please get as much info and history on it as you can before deciding to bring it home.