Well I am sure everyone knows that some recipes go for a shitton on the AH right?? And the reason is,
PEOPLE ARE LAZY.
There are numerous amounts of recipes to get that you can sell on the AH for whatever price you want, just as long as its not outragous. for instance
Master First Aid - Doctor in the House - Thottbot: World of Warcraft
The master first aid book
Horde - Aresella is located at 26,62 at Falcon Watch in Hellfire Peninsula.
Alliance - Burko is located at 22,39 at at the Temple of Telhamat in Hellfire Peninsula.
You can buy it for 5 gold, and i have sold it for 40-60 gold each 4 times now.
You can also do it with the other recipes following from the same vendor
Manual Heavy netherweave bandage
Manual: Heavy Netherweave Bandage - Thottbot: World of Warcraft
Manual: Netherweave Bandage - Thottbot: World of Warcraft
Manual: Netherweave bandage
Another one found in silithus
Formula: Lesser Mana Oil - Thottbot: World of Warcraft
From Kania in Cenarion hold in silithus,
Recipe Price: 1g
Unlimited
AH price for my server, 40-60 gold, BECAUSE, this is a must need to the most common enchanting leveling guide on the WoW forums. Also this is way out of the way for most people since most people dont go to silithus.
I will add more as i find them, feel free to post new ones and i will add them here.