I need some advise on a shipping disaster.


I recently purchased a pair of speakers on Audiogon.  The price I offered was accepted and I sent the payment promptly.  The seller in return shipped the 2 speakers promptly and sent me the tracking numbers.  One of the speakers was delivered the next day and UPS has lost the other speaker.  The seller has put in a lost package investigation however UPs has not recovered the speaker.  It has been 8 days since the lost investigation has started.
I come to find out that the package was only insured for only half of what I paid for the whole package and it would cost twice that to replace the lost speaker new. So even if UPS cannot find the speaker and pay the insurance claim I cannot even replace the missing speaker for the amount of the claim.  
I'm not sure how to go about solving this issue.  I purchased and paid for a full set of speakers and only have 1.  
Any suggestion on what I should do next?  Has anyone ever experienced an issue such as this?  Does Audiogon have policies around issues such as this?

Thank you,
Vince
vtdragani
The Audiogon rep's advice was right on and was solved my problem when my purchase went very bad:  contact Tammy at Audiogon.

I bought a pair of amps from a dealer in Florida--my first Audiogon transaction. Not only did he ship me the wrong amps, but he also refused to cancel the sale. He insisted that I send back the wrong amps, and he would then send me the ones I had bought. The amps he sent me, however, arrived in damaged crates--one had the lid swinging open--so sending them back was problematic.  And so was agreeing to complete the transaction.

When I brought this to Audiogon's attention, Tammy was right on it.  She even called me promptly to help.  And when she contacted the dealer, he was suddenly very eager to make things right. Soon thereafter, the dealer's driver picked up the amps, and I had a full refund.

Yay, Tammy!
WHEN YOU USE A CC WITH PAYPAL THE CREDIT CARD COMPANY FORCES PAYPAL TO PAY BACK THE BUYER THEN GOES AFTER THE SELLER IF THE SELLER HAS NO MONEY IN HIS ACCOUNT. YOU SIMPLY CONTACT BOTH. NOT DELIVERED OR AS DESCRIBED THE BUYER IS COVERED EVEN IF PAYPAL TRIES TO BACK THE SELLER. TOO BAD IT PROTECTS BUYERS THAT GET BUYERS REMORSE.
Sorry for your frustration.   Stories like this are why I buy and sell locally , cash transaction.   Never any issues
I ship freight on pallet for speakers.  Speaker is expensive and large so worth the hassle and $$.  GL Vince!