I was browsing through the Shard Exchange today and found a +3->+4 skill upgrade tome at 15 AS. I selected it, expecting that it would update my bid amount to the minimum bid (as it usually does, on a good day). Instead, after bidding, I find out that it carried over the minimum bid from a previous item I'd selected - I'd just wasted 525 astral shards (3000 TP worth, *sigh*).
So why is there no time window to cancel bids? Most games have this. I don't think it's too much to ask, especially since AS are bought with real money and the UI is so buggy. Even if not through the ASAH UI, I should be able to have my bid canceled by a DM in these types of situations (I got the usual, "Players are responsible for all their transactions" nonsense).
I don't mean to be just another complainer; I was actually quite impressed by the quests and enhancement system this expansion. Just my two cents.