"Bind-on-Account chest pieces: 60 seals
Bind-on-Account weapons: 60-95 seals
Bind-on-Account trinkets: 75 seals"
Additional notes from Zarhym:
"These heirloom items will also be offered for emblems in Dalaran.
The idea behind the Argent Tournament (Crusaders' Coliseum excluded) is to provide the solo or duo players an avenue to acquire some good gear over time without necessarily having to do 5-, 10-, or 25-player content. This is the primary reason why the Crusader title is required in order to access items that one would ordinarily find purchasable with emblems obtained through 5-player dungeons.
Just the same though, we don't want to cut off access to these heirloom items from those who spend more of their time in dungeons than partaking in the Argent Tournament, which is why they will also be available for purchase with emblems."
Several interesting points here.
First off, none of these new heirlooms have been seen on the PTR's yet. It will be interesting to see whether these new items are carbon copies (or even identical to) the Heroism heirlooms, or some new variations. At any rate, this large variety of new items that have yet to appear on the PTR's presumably puts a damper on some of the PTR-watching speculation that the patch will arrive on Tuesday. I would guess - and this is only a guess - that the Wintergrasp heirloom vendor may also be obtaining some new chest pieces to avoid being left out in the cold.
Second, this plugs a big ideological hole with the heirlooms currently in the game, namely that you have to do group PVE or PVP content (two weekly solo quests in Wintergrasp aside) in order to get heirlooms used primarily for solo PVE. If anything, the prices seem a bit on the low side by comparison to the other heirlooms. Daily quests will award 10 seals a day, with another 5 or so available through the new heroic 5-man dungeon. I.e., you can slack a fair amount and still bang out a heirloom per week. By contrast, it takes a minimum of a month to get a heirloom via weekly Wintergrasp quests alone, and something like 10 complete 5-man heroics to claim the cheaper heroic dungeon heirlooms.
Finally, the idea of gating solo-geared rewards behind the Crusader title - which represents six separate rep grinds - offers Blizzard a potential way to get around the problem of how to continue to offer solo progression as an expansion progresses. The challenge in this area has always been how not to step on the toes of entry level group/raid content. If you stick enough rep grind requirements on the task, players who intend to do group content will just do entry level group content instead of trying to cherry pick the best items out of the solo content.
This is not a pure experiment, in that some of the reputations in question have been in the game since its launch, and the new ones have been sitting around on daily quests that players have been doing anyway since the last patch. Still, Blizzard may be watching this experiment to see who actually snaps up the newest heirlooms. It will be very interesting to see whether this concept evolves further when we move beyond the patch currently being tested and onto the final (planned) patch of the Wrath era.