How do YOU even dare to write anything about this matter, Mr. Innocence...
First, I'm simply describing the manner by which poophammer came across the item in question, so there's no confusion. It was an error in the way the website read a number's format, nothing more, nothing less.
Second, the manner in which you lost YOUR item was due to your own error, not a bug. You forgot to set the level of heirloom you wanted. I have offered multiple times to give it back to you, and you have refused. There is very little I can do for you besides that. Other people have gladly taken me up on the same offer when I purchased their items for an unintentionally low price. You're either a drama queen, incredibly stupid, incredibly hubristic, or, more likely, some unfortunate combination of the three. If I don't hear from you by this weekend, I'm going to assume you don't want your sword, and will give it away.
Have a good week, try to remember your blood pressure medication. I wouldn't want you to have an aneurism.