should i sell my silver on ebay?

Looking at the Aussie $ silver chart it has gone parabolic, looks like $16+ is a definite possibility on further aussie dollar weakness/silver strength, the thing is I also see the an imminent correction that could take $A silver back to ~$11. I am tempted to put my physical silver up on ebay unfortunately I am worried that I may swamp the market, any advice would be appreciated.