Costs have not changed. Just level requirements.
For those concerned about losing a lot of xp on the skip -- it's more like just under 2 levels now.
And if you do take the route from the Blasted Lands make sure you run fast and avoid the Horde troops surrounding the portal because you can't fly yet. When I did with my alt someone else was running ahead of me and they aggroed the bad guys so I could breeze right through
What fixing are you people talking about? Invasions were made for 5 people, later for 3 (when people were higher levels), bosses even in raids.
They did fix the invasions. They were broken before, where they could be afk'd and get platinum. Now they are playable again, still a little too easy, easier than they were when they were current content, but at least they aren't stupid broken literally afk free like they were prior to this patch.
I just did a Garrison Invasion a few hours ago, and my guards were level 50, against level 40 mobs. It went just fine - I didn't put much effort into it at all, and hit 1400 points easily.
Heads up for those that like to use Garrisons to do their character configurations.... the training dummies will net you ridiculously low DPS on damage meters. So don't panic...you didn't miss something (or maybe you did) in your rotation... go to boralus/zandalar and test there--no clue if other expansion dummies are equally fowled.
They put a level 30 cap restriction on using the Timeless Isle Cave.
I guess nobody complains about mining/herbing giving a lot of xp.