Leading the Cavalry

Total of Mounts Available in TBC 3.0.2 and how to collect 50

Scroll down or click here for Alliance list

For Horde:

• Capitals
  
• Undercity, Skeletal (War)Horse 1 2 3 4 5
• 
  
• Orgrimmar, Horn of the ..... Wolf 1 2 3 4 5 6
• 
  
• Thunderbluff, Kodo 1 2 3 4 5
• 
  
• Darkspear Trolls, Raptor 1 2 3 4 5 6
• 
  
• Silvermoon City, Hawkstrider 1 2 3 4 5 6 7
• 
  

Total: 29 Mounts

• 
  
• Burning Crusade
• 
  
• The Mag'har, Exalted 1 2 3 4 5 6 7 8
• 
  
• SMW, Wind Rider 1 2 3 4 5 6 7
• 
  
• Skettis, Nether ray 1 2 3 4 5
• 
  
• Netherwing, Netherwing Drake 1 2 3 4 5 6
• 
  

Total: 26 Mounts

• 
  
• PVP
• 
  
• War mounts 1 2 3 4 5
• 
  
• Halaa, War Talbuk 1 2
• 
  
• Horn of the Frostwolf Howler 1
• 
  
• Seasonal, Nether Drake 1 2 3 4
• 
  

Total: 12 Mounts

• 
  
• Rare
• 
  
• Baron, Deathcharger's Reins
• 
  
• ZG, Raptor & Tiger
• 
  
• AQ, inside AQ mounts and Opening Mount 1 2 3 4 5
• 
  
• Heroic drops, SH & MGT 1 2
• 
  
• Ashes of A'lar
• 
  
• Cenarion War Hippogryph
• 
  
• ZA, Amani War Bear
• 
  
• TCG, 1 2 3 4 5 6
• 
  
• Seasonal, Halloween & Brewfest 1 2 3 4 5 & 6
• 
  
• Karazhan, Deathcharger's Reins
• 
  
• Recruit a Friend, Swift Zhevra
• 
  
• Engineering, Flying Machine 1 2
• 
  

Total: 29 Mounts

Subto

This is a list I compiled as an Alliance Draenei going for this cheapest method of completing this achievement before the expansion goes live. As such it does not contain mounts included in the "Wrath of the Lich King" expansion

Crafted Mounts - 2
Flying Machine Control
Turbo-Charged Flying Machine Control

TCG Mounts - 5
Riding Turtle
Reins of the Spectral Tiger
Reins of the Swift Spectral Tiger
X-51 Nether-Rocket
X-51 Nether-Rocket X-TREME

PvP Mounts - 5
Stormpike Battle Charger - 50 AV Marks in AV or Alterac Mountains
Black War Ram - <see below>
Black War Steed Bridle - <see below>
Reins of the Black War Elekk - <see below>
Reins of the Black War Tiger - 30 AV, 30AB, 30 WSG Marks in Champions' Hall

Arena Mounts - 3
Swift Nether Drake - Must have qualified in Arena S1
Merciless Nether Drake - Must have qualified in Arena S2
Vengeful Nether Drake - Must have qualified in Arena S3
Brutal Nether Drake - Must have qualified in Arena S4 (not yet released)

Rare Drop Mounts - 9
Amani War Bear - Zul'Aman = DISCONTINUED AS OF PATCH 3.0.0
Deathcharger's Reins - Stratholme = Baron Rivendare
Fiery Warhorse's Reins - Karazhan = Attumen the Huntsman
Swift Razzashi Raptor - Zul'Gurub = Bloodlord Mandokir
Swift Zulian Tiger - Zul'Gurub = High Priest Thekal
Great Brewfest Kodo -BRD = Coren Direbrew
Swift Brewfest Ram -BRD = Coren Direbrew
Reins of the Raven Lord - Seth. Halls (h) = Anzu (Druid quest)
Swift White Hawkstrider - MgT (h) = Kael'thalas Sunstrider
Ashs of Al'ar - The Eye = Kael'thalas Sunstrider

FACTION MOUNTS - 31 to 37

Nagrand - Trader Narasu
Exalted with Kurenai
Reins of the Cobalt Riding Talbuk - 70g
Reins of the Cobalt War Talbuk - 100g
Reins of the Silver Riding Talbuk - 70g
Reins of the Silver War Talbuk - 100g
Reins of the Tan Riding Talbuk - 70g
Reins of the Tan War Talbuk - 100g
Reins of the White Riding Talbuk - 70g
Reins of the White War Talbuk - 100g

Wetlands - Unger Statforth
Exalted with Stormwind
Black Stallion Bridle - 10g

Wetlands - Unger Statforth
or
Elwynn Forest - Katie Hunter
or
Hillsbrad Foothills - Merideth Carlson
or
Dustwallow Marsh - Gregor MacVince
Exalted with Stormwind
Brown Horse Bridle - 10g
Chestnut Mare Bridle - 10g
Pinto Bridle - 10g
Swift Brown Steed - 100g
Swift Palomino - 100g
Swift White Steed - 100g

The Exodar - Torallius the Pack Handler
Exalted with the Exodar
Brown Elekk - 10g
Grey Elekk - 10g
Purple Elekk - 10g
Great Blue Elekk - 100g
Great Green Elekk - 100g
Great Purple Elekk - 100g

Dun Morogh - Veron Amberstill
Exalted with Ironforge

White Ram - 10g
Grey Ram - 10g
Brown Ram - 10g
Swift White Ram - 100g
Swift Grey Ram - 100g
Swift Brown Ram - 100g

Darnassus - Lelanai
Exalted with Darnassus

Reins of the Spotted Frostsaber - 10g
Reins of the Striped Frostsaber - 10g
Reins of the Striped Nightsaber - 10g
Reins of the Swift Frostsaber - 100g
Reins of the Swift Mistsaber - 100g
Reins of the Swift Stormsaber - 100g

Milli Featherwhistle - Dun Morogh
Exalted with Gnomeregan Exiles
Swift Green Mechanostrider - 100g
Swift White Mechanostrider - 100g
Swift Yellow Mechanostrider - 100g
Blue Mechanostrider - 10g
Green Mechanostrider - 10g
Red Mechanostrider - 10g
Unpainted Mechanostrider - 10g

Rivern Frostwind - Winterspring
Exalted with Wintersaber Trainers
Reins of the Winterspring Frostsaber - 100g

Flying Mounts - 18

Shadowmoon Valley - Brunn Flamebeard

Ebon Gryphon - 100g
Golden Gryphon - 100g
Snowy Gryphon - 100g
Swift Blue Gryphon - 200g
Swift Green Gryphon - 200g
Swift Purple Gryphon - 200g
Swift Red Gryphon - 200g

Zangarmarsh - Fedryen Swiftspear
Exalted with Cenerion Expedition

Cenarion War Hippogryph - 2000g

Shadowmoon Valley - Drake Dealer Hurlunk
Exalted with Netherwing
Reins of the Azure Netherwing Drake - 200g
Reins of the Onyx Netherwing Drake - 200g
Reins of the Cobalt Netherwing Drake - 200g
Reins of the Purple Netherwing Drake - 200g
Reins of the Veridian Netherwing Drake - 200g
Reins of the Violet Netherwing Drake - 200g

Terokkar Forest - Grella
Exalted with Sha'tari Skyguard

Blue Riding Nether Ray - 200g
Green Riding Nether Ray - 200g
Purple Riding Nether Ray - 200g
Red Riding Nether Ray - 200g
Silver Riding Nether Ray - 200g

Approximate cost depending on if you have at least one dropped rare mount:

31 Alliance City Mounts (excluding mechanostriders)
1 Rare Mount
7 Alliance Flyers
5 Sha'tari Skyguard Flyers
1 Free Netherwing Mount
5 PvP Mounts

4310 Gold - 20% discount at exalted = 3448 gold
and 170 AV, 120 AB, 120 WSG
50 Mounts!

This is going for maximum cheapness as an Alliance Draenei. It would been even cheaper as a gnome or dwarf due to mechanostriders! Could cut out Sha'tari Skyguard and Netherwing in that case!

Edited to get below 7500 characters; some link removed. Edited for clarity.

And a partridge in a pear tree.