I've been seeking these two items for quite a while now, so I thought I'd bring my advertisement to the forums! :D
I'm looking to buy Bloodlust Britches and Bloodlust Boots to complete my transmog set.
Priority is the pants.
I am paying quite well for either item. I won't say how much here, but if you are curious, whisper me in-game - I can promise my offer is substantial. :)
As far as the britches are concerned, Wowhead reports that the mob with the highest drop-rate (outside of rare/elite/raid/dungeon) are the Twilight Avengers in Silithus... with a drop rate of 0.01%. :-/
The boots fair a bit better, with a drop rate of 0.04% from Hive'Regal Burrowers (also Silithus).
Essentially, these items are both world drops from mobs level 52-61. Probably not worth 'farming' unless you are extremely ambitious. :P
If you're Horde, I'd be happy to buy them off the neutral AH. Just make an alt on Alliance side and let me know you have them available - we'll work out a deal. :)
I will be buying on a "first come, first serve" basis. I will not be reselling, and I can only equip one of each item. :P Please don't be upset if I don't buy from you because I already found what I was looking for. Be aware I am actively farming and advertising each day, and have a small handful of people farming for these items too, so at some point I'm bound to get lucky. :D
TL;DR: I want to buy Bloodlust Britches and Bloodlust Boots ASAP. I am paying lots of monies.
And thus ends my spiel.