Bitcoin (BTC) price abruptly dropped 4.9% from $9,800 to $9,324 after rejecting at a key resistance level again, is it a buy the dip opportunity? 
It is your well to think of it. If you could think that it will soon become higher than $9,324 then it is a big opportunity. And what happens if it drops again after you buy, should you care to hold it or sell? If you think that this is a good opportunity, then you better not waste it otherwise you'll never find it again but never regrets if it drops more after you bought.