How do I pay?

I would inspect them first and then the seller would have to guarantee them against defects.

FWIW I had a terrible experience selling with with Escrow.com.I used them because I had no feedback and figured escrow would give the buyer some piece of mind. Awful instructions and poor customer service. Eventually the buyer canceled the transaction. Luckily he was willing to complete the sale using PayPal. 

Ditto, so many of the earlier posts.
This "deal" has DON'T DO IT screaming from it.

Nah

Another consideration/situation I ran into regarding UPS shipping Insurance.

I bought JVC TT81 in large Plinth, shipped from Canada. I requested and paid for enough insurance.

It came destroyed, seller had listed 'Vintage', and UPS said, oh, we don't insure Vintage (even though they sold the insurance, denied the claim. Luckily, seller gave full refund (he had packed it in an ols box, not double boxed.

And, because seller bought the insurance (even though I paid him that cost), he had to make the claim, and he coulsd not start that until it got back to Canada, even though UPS USA Damage Claim had inspected it in a regional office here.

New boxes, double box, no description 'vintage'.