Rebuys are a different than re-entries. Rebuys end up being a lot more of a donkfest because those players stay at the same table. In reentries, they get knocked out and put on a new table if I'm not mistaken. In rebuys, you should put 3 to 5x max and Im not sure what the number should be for reentries. Its pretty much like entering into a new tournament or late registering....but 28 is way too much lol