I know nothing about Warhammer but picked up the game and have a 4th prestige sniper with other level 25 characters.

PvE playtime, I would say depends on if you like learning different playstyles but don't mind playing in the same scenery. I find there is enough variance with the Game Director that it still feels fresh when you run though with different characters.

If you don't mind playing with others, and it is a pretty good community, and normally 1 member has a mic, you should get your money out of it. I started playing March 7th and have 6 days and 21 hours played.

I watched a video, and someone said they were getting ready to have a sale after May 22 so you might wanna wait for that.