Book direct, not through this Hong Kong Agency.
Booked rail tix with understanding tix would be immediate or next business day as stated in their terms and conditions. 4 days later, I inquired and no understandable response. Called credit card company to dispute charge and advised Rail Ninja, who said my tix would be issued in 2 weeks. Advised Rail Ninja this was unacceptable and requested a full refund. If you try to cancel yourself, they charge $10 a ticket. This appears to be a part of their business plan.