Originally Posted by bidhere23
You can get some good last minute flights from Shanghai to Beijing and back on elong.net. If you either buy ahead at a 60% off rate or at last minute you can fly for around 500 RMB.
This has not been my experience. 60%+ discounts (<y450) are fairly rare in the SHA-PEK market. I just searched 5 days out and y680 (40% off) was the lowest I found (and only on a handful of flights). PEK-SHA tends to be a bit better, but can also be pricey during the summer.