FOREVERAH
Collecting since Sat 14 Nov 14:19: 0.5 of the ~14 days the models need to settle. Price history is real already; demand, pricing and forecasts firm up as data comes in.

Crafting profit

3 recipes priced on Horde Auction House 113
All AlchemyBlacksmithingCookingEnchantingEngineeringFirst AidFishingHerbalismLeatherworkingMiningSkinningTailoring ✓ Only recipes I know
Recipe Cost Sells for Profit Margin Sold/dayListed Gold/day
First Aid Kit 39c 61c 22c +56% 28.42197 4s 40c
Linen Bandage
1× Linen Cloth · First Aid
24c 9c −15c −62% 315.04185 –
Minor Healing Potion
1× Empty Vial, 1× Mild Spices, 1× Peacebloom · First Aid
1s 8c 9c −99c −92% 103.91338 –

Cost = materials at today's floor (v = not on the AH, priced at the vendor). Sells for = the crafted item's floor after the 5% cut. Gold/day = profit × how many sold per day lately (capped at 20): what you could make if you kept the market supplied. Recipes that make nothing sellable (most enchants) aren't listed.