anko is right even if you would like to cancel your own auction. its just not something that happens. the only way i see around that is if NO one bid at all you could cancel anytime.
-canceling an auction is one of the WORST practices ive seen on sites where a user runs an auction (even with a disclaimer that i have a right not to have to sell to whoever/to end without warning or what not) it is so stupid to even bid in those ... even if you didnt actually have the money go into the "system reserver" or the bid was on a forum and is still on your account. i avoid ALL auctions like that why would i waste my time on somthing that could be canceled on whim
though depending on the auction lenght the leeway really doesnt seem too plausable.
- though i can see canceling something that no one is bidding on.
-maybe if someone really wanted to cancel something that has bids on it there would be a fee that the "auction house" charges as punishment for leading people on.
in a non single player game maybe you can message the winning buyer if you can buyback what they purchased, otherwise there really isnt anything that could be done that would make sence to a player base as a whole.
you can buyout your own auction -if you have the funds and you set one ... or you can increase the bid youself by bidding in your own auction, seams odd i did it once cause i had sellers remorse and luckly i won my own pet back @.@. would have loved to cancel it but once people bid its just not fair