Forge of Souls is giving 54850 exp at level 82, 492k to level, and at 82 im getting the legacy dungeon buff and pretty much one-shotting stuff on my DK. Plus theres an instance portal at the end which leads to Pit of Saron which you can just leave and your back outside all the instances plus its a damn small dungeon, took me around 6minutes.
proof pic this time:
https://i.imgur.com/mlHT8tm.jpg
i DO NOT get this kind of exp at level 88 im only getting around 24k for the dungeon complete, guess theirs a level limit put in.
EDIT: Im on EU servers.
EDIT2:
https://i.imgur.com/25PyWni.jpg Tol'Vir still giving 57.3k, level 88 - EU