Has anyone ever bought from Audio Liquidators

In business since 1981 doing what? Caution, especially with a credit card transaction is a must. Be prepared to  cancel your card quickly if any difficulty with your transaction occurs. Never use a debit card with questionable vendors.  Force a transaction into PayPal if possible, for they will provide some limited protection, mainly if goods are not delivered, not for issues with the goods received. Years ago, one of the major banks had a feature in their credit card product that allowed you to generate a new card number and limit the amount of the transaction, as protection from scams.  Sadly, they dropped the product. Remember, if the prices are too good to be true, you are being conned.

Call the police.  Seriously.  I've done that when I have a street address and asked them to pay them a visit.  The also can tell you if any police reports have been filed about them.  Yes, most police departments have better things to do, but on two occasions it worked.  One turned out to be okay, the other not, being a non existent address.