OK, I made a presumption - all unknown players were rated 5/5/1/1/5 for $164,000 per (they won't be, but for purposes of getting some kind of numbers, I did it that way).
After five rounds:
The most cap space left (cap is subject to change, but based on the numbers we have), Ipswich Reds, with just over $3.5 million, an average of just over $321,000 per player left.
The least? Roma Vandali, just under $2.1 million, an average of just under $190,000 per player left
The mean? Cap space, a bit over $2.6 million, an average mean of just under $239,000 per player left.
And don't ask me about average skill ratings - not with nine (so far) unrated players drafted!