Ok seriously now. Here's a brief list of popular buff foods. Find what you need, farm it, then mail it to Tomoe or put it in the guild bank if you can't cook it. Spirit works out to something like 4 Spirit = 1 Mana / 5 sec. Not sure how it applies to health. I think 1 Stam = 10 HP. Now you can't say you didn't know.
Spell Damage
Blackened Basilisk - 23 Spell Damage, 20 Spirit - 1 Chunk o' Basilisk
Crunchy Serpent - 23 Spell Damage, 20 Spirit - 1 Serpent Flesh
Poached Bluefish - 23 Spell Damage, 20 Spirit - 1 Icefin Bluefish (fishing)
Stam Food
Spicy Crawdad - 30 Stam, 20 Spirit - 1 Furious Crawdad (fishing)
Clam Bar - 20 Stam, 20 Spirit - 2 Jaggal Clam Meat, 1 Soothing Spices
Feltail Delight - 20 Stam, 20 Spirit - 1 Spotted Feltail (fishing)
Buzzard Bites - 20 Stam, 20 Spirit - 1 Buzzard Meat
Mok'Nathal Shortribs - 20 Stam, 20 Spirit - 1 Raptor Ribs
Talbuk Steak - 20 Stam, 20 Spirit - 1 Talbuk Venison
Melee Food
Ravager Dog - 40 Atk Power, 20 Spirit - 1 Ravager Flesh
Roasted Clefthoof - 20 Strength, 20 Spirit - 1 Clefthoof Meat
Warp Burger - 20 Agility, 20 Spirit - 1 Warped Flesh
Other Stuff
Blackened Sporefish - 20 Stam, 8 Mana / 5 sec - 1 Zangarian Sporefish (fishing)
Golden Fish Sticks - +44 healing, 20 Spirit - 1 Golden Darter (fishing)
On the auction house, a stack of buff food would cost around 15-20g, with stuff like Golden Fish Sticks going up to 40g on raid nights. If you seriously can't farm, then at least watch the AH for price drops, or speak with a skinner or fisherman to save you something next time they go hunting.