Used them for a domestic flight. Had contacted ctrip, but ctrip wouldn't deliver to my address.

Caya did deliver the ticket a couple of hours after booking, and you can pay cash.

Very convenient.

Relatively painless, lady spoke usable English, her name is Shen.
Paid more than Elong and about the same as Ctrip but could pay CASH.

They also delivered the ticket.

Elong requires a credit card application and collects fare too much information. CAYA works quite well. Suffer the English and try CAYA.