I answered a question about this coin but I forgot to make it public, so I publish it here:
>> Message posted From:
XXXXXX@gmail.com>>
>> Hi Grondilu,
>>
>> I wouldn't usually ask this sort of thing, but due to extenuating circumstances
>> it's become necessary.
>>
>> When I originally bid on your gold coin (101BTC), I was bidding with the
>> expectation of 1BTC=1.80USD. About $180USD was the most I was willing to bid on
>> the item.
>>
>> Now that 1BTC=3.57USD, I cannot afford my bid. I did not anticipate a rise from
>> $1.80/BTC to $3.57.
>>
>> I realize that this is request could be damaging to my reputation on
>> BiddingPond or in the BTC world, but I simply cannot afford to pay $360 for an
>> item on BiddingPond at the moment. I don't have that kind of disposable income
>> this month.
>>
>> I sincerely apologize for the inconvenience that I'm sure this will cause for
>> you, and I would be willing to pay you several BTC for lost time if you find
>> that to be necessary.
>>
>> Thanks for your time and understanding,
>>
>> Patrick
>
> Hi,
>
> thanks for noticing that you won't be capable of fullfilling your bid. In case
> you are not overbidded, the auction will simply be cancelled, and I will have
> to give you a negative rating. Sorry about that.
>
> Note for other bidders: please do not bid a bitcoin amount you don't actually
> own or that you are not really willing to pay. Do not make a bid based on your
> expectation for currency rates at the end of the auction. Failure to do so will
> damage your reputation as a buyer. Only bid a bitcoin amount you currently own
> and that you are willing to give in order to get the item.