I think ebay, craigslist or local boards are your best bet.
Alternatively, post a want ad on here and some other national boards and hope for the best. They still have a lot of value as actual game pieces though, so it's hard to find a lot with no pieces, etc.
People who owe me feedback: Readingrambo, steellegioncpt, Bigheaddan, Inigo Montoya, Mournafein,TheDean, Palados, Arthas367, gamma098, xSoulgrinderx x2, litsnsirn, noexit1982, Captaincortez, lafkak, Aelorien Darkthorn, clianez203, Hsivils, rwphillipsstl, prkeller, Close Seer, Jkilla, Keyoftwilight, proofyeq, voodoopainter.
Did you know that you can print your own shipping labels at a discount using USPS.com or Paypal? All you need is a scale!