What ever tame means it ain't what you got. If a snake is a bit snappy but not overly agressive I might consider it tame for a particular species.
For instance a corn that snaps at you on ocassion and hisses and will on ocassion bite is not what I call tame, I would call him typical of a wild caught adult.
However, if the same snake above were a black racer and it fell short of biting me 17 times per each time I handled it, then that would be tame.
For bloods though your pair are not "tame". I have seen many of them that are puppy dog tame as far as tempermant. Given that is the case an animal that bites the crap out of you is not tame.
In other words the seller hosed you over if that was what you wanted to hear,
