The gold isn't that good, especially after you become the Listener. I think more gold can be acquired just doing job's like band it's, the Forsworn or the dungeon's. The "armor" you get, we'll, I sold it, and never bothered to try it on or use it. And after the "war" is more or less finished, and your assignment's come only from the Night Mother, they all start becoming the same thing. It got to be a bit boring getting the assignment from the Night Mother, then going to the NPC who your char gets the coin and the kill assignment from, then making the kill. And the kill's became gambler's who were dodging who they owed, a jilted soldier, or whatever, there was nothing ever new, or challenging.
The only benefit I saw after joining was when Astrid gave my char Shadowmere. After the destruction and move to Falkreath, well, it got monotonous.
And to get part of "Marked for Death" from the wall inside the Sanctuary, I just had my char make a wide berth around the other's as they listened to the Vampire "girl" tell of her latest kill. Got the Word, and blazed out. When I get my disc back, I'll decide on whether or not to join. The "war" is more or less over (Imperialists won), so it makes me wonder how the kill assignments will play out.