On the BA site I can see a CW business class from Rio to London (GIG - LHR) on 18 Dec. It is selling for $1225. All other days around that time are twice the price. Are there be any indicators that could tell me how long that price will be around? I need a few days to make a decision so can't buy at this moment in time and don't want to pay for a 72 hours hold. Thanks for any assistance in this matter.