What are some in demand raids to run and pets to sell for gold atm?
Look at the pets required for Raiding With Leashes + RWL 2 - 5 achievements.
Each centers around a specific expansion – for example, RWL3 has pets from Hyjal Summit (Grotesque, Stinkrot, Hyjal Wisp) ; Sunwell Plateau (Chaos Pup, Sunblade Micro) and Black Temple (Fragment of Suffering/Anger/Desire) among others. Those raids can be knocked out in 15-30 minutes each, and you may be able to skip some bosses, unless the raid is linear (Hyjal - you must do the various waves + boss in order and can’t skip to a pet boss).
Go to the Undermine Journal. Work on pets that don’t have 14 already for sale.
theunderminejournal.com_us/proudmoore_category_battlepets
Currently if you’re looking for pets to sell, consider the two faction exclusive baby raptors you can buy with the new warfront currency, the rebuilt spider and gorilla from the Voldun incursion’s Battle-bot quest and the new pets from the Gnomregen pet dungeon, which so far can be caged and sold.
Most of the Raiding with Leashes dungeon pets don’t go for much anymore besides the very useful ones like Anubisath or Chrominius; or the Cata ones as they’re the newest; which you might be able to get a few hundred gold for.
The only ones really worth money are the pets out of MoP dungeons, Siege of Orgrimmar and Throne of Thunder. Those pets have a ridiculously low drop rate so you can sell them for 10k+ usually if you get one.
Siege of Orgrimmar is probably top.