Hey has anyone seen this?

I was on a train from Shenzhen to Guangzhou in China recently and I was flipping through their on train magazine.

I found an ad for United for their Beijing to Washington DC route.
It advertised really cheap prices:

Coach: About 1000 Rmb ( $125 USD )
Business: About 4000 Rmb ( $500 USD )

Just thought I'd let u all know.