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many reason can be affected bitcoin price :D

I can't tell you what to do. But I can tell you what I do. I buy bitcoin every 2 weeks. I have an automatic buy that comes out of my check through Coinbase. I buy bitcoin at whatever the price is that day, sometimes it's "high" and sometimes it's "low". I believe in the long term with bitcoin so I don't care. I just buy every paycheck.