The whole set now costs only 575 honor not too bad!

With the new honor system in place it is quite possible to complete this entire set within a month or shorter, factoring in earning about 4000 honor per day. The casual gamer can easily net 2000 honor per day with just a few hours of play and earn this set within 45-50 days (Less than two months). No more diminishing returns on honor, you keep what you earn. And come release day in January, the more of this PvP gear you have the easier your grind to 70 will be in addition to upgrades while grinding out levels. The old honor system was severly flawed and I am glad to see it go away and this new system in place. It may also have flaws, but the gist of it is remarkable.

After Patch 2.4, this set now costs the following:

Field Marshal's Leather Chestpiece: 13,770 honor, 30 Arathi Basin marks
Field Marshal's Leather Epaulets: 8,415 honor, 20 Arathi Basin marks
Field Marshal's Leather Mask: 13,005 honor, 30 Alterac Valley marks
Marshal's Leather Footguards: 8,415 honor, 20 Arathi Basin marks
Marshal's Leather Handgrips: 8,415 honor, 20 Alterac Valley marks
Marshal's Leather Leggings: 13,005 honor, 30 Warsong Gulch marks

Total would be 65,025 honor, 70 AB marks, 50 AV marks, and 30 WSG marks.

Some light math for this set at lvl 60:

143 Agi:
5% Crit
10% Dodge
+ 143 AP
+ 286 Armor

164 Stam:
+ 1640 Health

54 critical strike rating:
4% Crit

50 Hit Rating:
5% Chance to hit

+ 40 AP from Bonus

+ 20 Stam from Bonus
200 Health

Does someone know the matching cloak for this set in the picture?

72000 honor if your looking to get all the peices needed not to hard if you use pvp to level up which now seems to be the fastest way 15-60

New cost with the marks getting removed in the upcomming patch

Shoulders, Boots and Gloves: 9000 Honor each.
Leggings, Helmet and Chest: 15000 Honor each.

Level 60 Epic PVP set is very easy to get nowdays and something should be obtained once you can.
Personally I used this set on my rogue all the way through outlands and picked up gladiator's set on 70 so, yeah these are good bang for buck Honor.

You can not use this set for transmog unless you have the feat of strength of "Warlord", "High Warlord", "Marshal" or "Field Marshal". If you do have the feat of strength, you have to buy a different set of gear to transmog it. I have confirmed that this is correct. This limitation was created so only characters with the feat of strength could wear this gear in transmog form because the actual gear is available for purchase with honor points to everyone. The transmog-able gear can be bought in Area 52 from, Leeni "smiley" smalls ((NPC #52533))

edit: apparently you only need "Legionnaire/Knight-Captain or higher under the old PvP system", quoted from a blue post on blizzard's forum (http://us.battle.net/wow/en/forum/topic/3657275742?page=9#178).