Ebay and taxes on bullion purchases

I think this is just moronic, iam currency looking of a 500 GR. GOLD bar and yes that is correct, a good few months on BTC has allowed me to up the ante, the problem is I refuse to pay the 6K plus in taxes on the bay so if I can get it through my LCS I could save thousands on taxes, so far no luck iam going to call tomorrow and see if they found one.

Also I found an a store that is on the bay and there local here in Vegas but won't give me the in state discount, this is tough weight to get maybe 1 or 2 people even have it

So what do you think about taxes and the bay ?