Alright so someone wants to sell a "Colombian Brown Tail Boa" for $75, tank included. I don't know the dimensions of the tank yet but, the snake is said to be about a year old, Female, 16"- 20" long, and is fed a mouse once a week. I haven't talked to the actual person selling it yet so that is all I know for now. My questions are;

1. Is there such a thing as a Colombian Brown Tail? I haven't found anything about one so is he screwing the name up?
2.Is it worth it? Assuming its a healthy snake
(I know to check its health first but, like I said, haven't talked to the actual seller yet)

Any insight/opinions is/are appreciated.
Thanks,
Bruce