Why can’t we buy items from the same account at once?

Is there a reason why we have this restriction? Like this one guy controls the entire white sextant market. I have to wait for him to accept my offer just so I can make another offer to this man with all the sextants.

It's definitely a problem, to be sure. But, then again, anti-spam mechanics are probably there for a good reason, too.

The impact one focused market-controller can have on XBox is pretty huge and this mechanic is certainly problematic for us regular buyers. I ran into the same issue last League, trying to buy from the account that was controlling whatever currency-class I was trying to get.

Hurry up and wait.. :)