How do I pay?

Quite simple, Don't get obsessed over 1 particular speaker for sale, Move on to another speaker or wait til another pair  becomes avaliable. 
Paypal offers some protection. I would never ever send a  cashiers ck for anything audio. 
I only use paypal

Yes if you live within say 500 miles, maybe you could split the drive  with seller, pay in cash. Seller has to give $100 for drive fees

Don’t do it!

Buy them in person or don’t buy them at all.

Ask yourself this simple question: why isn't he willing to accept paypal ? 2/3% overhead over a 4K deal ? This one stinks . . . .