I think the problem is the closing date. If someone wants to spend more than 200btc he wants the machine now. Dont wait 15days more where the machine could mine for the buyer. Just my 2 fiatcents :p
Perhaps. I think the fact that I am insisting on a local transaction is narrowing the audience a lot as well.
Would a 7 day auction be more reasonable? I accommodate that if that's what potential buyers want.
How about bidding in BTC vs USD? I would like to get paid in USD at the end of the day, so it doesn't matter to me either way.