Use escrow service to pay for speakers?

Seller on what website?

You can check the seller's feedback.

If you use PayPal you are covered as well as with many other platforms such as eBay, and Amazon.

Most credit card companies and banks also cover you.

Audiogon .

Feedback is not always a reliable resource, I've heard.

I have not registered with Paypal. In fact do virtually zero online banking.

Hoping to pay by a secure method.

I doubt individuals use cards? Will check that, thanks.

Lots of ways to pay by a secure method. Many fewer to recieve by a secure method.

With the amount of scams going on, using a more secure electronic payment system is best. At least there is some assurance you can recover your money in fraud. Cash in hand and travel is best.