For the record, all of the "Hidden Treasures" packs have been accounted for, and were only in the first two or three print runs.
Additionally, Zendikar booster boxes (36 packs total) are only about 3 btc on ABUgames, who even take bitcoin.
I think you'll need to lower your prices quite a bit before you find a buyer.
Do you have a source? I feel like your info is flawed because...
1- I don't think wotc ever made any official announcement about the "hidden treasures", so there is no list to which they could have been "accounted" from.
2- I believe that the fat packs were only sold in the first print run, and were not reprinted like the standard booster boxes.
Still, the odds of getting a "treasure" card out of a fat pack is extremely slim, I know people have opened whole cases and seen 0 treasures, so it's an extremely small chance of pulling one from a mere 8 booster packs.
I think most people value the fat packs because they each contain, in addition to booster packs, a pack of 40 basic land- which is
full art basic land in the zendikar set.
That said, I'm bumping a very old post, and the value of bitcoin and the value of a fat pack have changed since I made the original post.
I'd now be willing to sell them for 2 BTC each.
