So for the next auction i suggest:
Docan will pick another rare item to gather, starting price, and minimal bid. Telling us this some time before actuion.
Every intrested person write here his char name, that will take part in auction.
On auction day, if actuion starts a 9pm, Docan goes to barter groudn to take starting price, and move this char to other location. When the times come to end, he move himself to that location.
Now we have all people gathered, he start auctioning items one by one. There will be no problem, if somebody win somethin, he pays, take item, and he can go away, or bid in next auctions.
A simples, as it can be.