Is there any big name and or reputable dealers that will accept payments direct from Dwolla for Gold and Silver Bullion coins.
this isn't a big name but they do accept dwolla:
http://www.silverstampede.com/of course, for the same reason the big dealers don't accept credit card, don't expect them to accept dwolla or any other ach based payment method either. spendbitcoins.com did at one time convert bitcoins to dollars and send apmex wire transfers to pay for your purchase with them, but they don't do that anymore.