I don't think it is quite that cut and dry...
http://pages.ebay.com/help/policies/alcohol.html#additional
It basically says this about "collectibles"
The value of the item is in the collectible container, not its contents.
The container has not been opened and any incidental contents are not intended for consumption.
The item is not available at any retail outlet.
The seller will take all appropriate steps to ensure that the buyer is of lawful age in the buyers and seller's jurisdiction. In general, this is 21 years of age.
Both the buyers and sellers ensure that the sale complies with all applicable laws and shipping regulations
As in interesting side note it is illegal to ship alcohol to several states. So what gives us the right to ship alcohol to those states for a homebrew competition? Is there something that specifically allows us to ship?