Is it easy to do a price match with Expedia?
 

So I'm looking to purchase an airfare on Expedia, but it's $120 more than booking on Air China's own website. Expedia apparently have a PM policy, but I'm not sure how it works in practice. The flight numbers and fare classes all match between the two sites. I see no reason why they won't do the PM, but at the same time, I'm afraid they'll take so long to consider that I won't be able to get a refund from Expedia if they don't honour the PM. I'm assuming Expedia offers free cancellation within 24 hours even if I book airfare on Air China. I don't see any free cancellations on Air China's flights.