I'm going to disagree with other Oiler fans and I do think he is very much available, Jeff Jackson already tipped his hand essentially confirming Broberg is on the team and we will make a spot for him if need be, I also think some are under the impression Broberg will play with Nurse since that pairing didn't look bad in the playoffs, but IMO that's too heavy of a work load in terms of quality of competition and role to start with, the 3rd pair on his natural side is ideally where he should start.
As for cost a 4th round pick is too light, I think the bare minimum is FLA's 3rd rd pick, but I wouldn't be shocked if another team had a marginally better offer like a 3rd and a 5th round pick.