With bitcoin it is quite hard to calculate the dip, because the price will change every minute. When we predict the market to fall to $13000 and make a buy order. It gets executed by $13000, and soon after when we try to sell for $13200 the market drops even low. This is what it is must to have better understanding and make buying and selling else we need the ability to bear the loss.
Your example sucks because there is ONLY a 1.5% spread between your buy and your sell prices.
And, really the OP and the title of this thread does NOT refer to selling even being beneficiary, so you are extrapolating more into this particular topic if you believe that incorporating selling into your practice could still work for the subject matter of this thread.
Personally, I am not against some small amount of selling - however, I do believe that a lot of benefits can come to a lot of people coming into bitcoin if they first attempt to focus on their buying and their HODLing way before they even begin to think about selling any bitcoin..
In other words, get one part of the formula correct before attempting to apply some kind of more advanced technique.
The buying on dips and holding is NO whimpy formula... You can become rich as fuck by merely focusing on that aspect of the formula... so let's talk about that, first. What might be your accumulation goal? Have you met it by engaging in buying on dips and HODLing... Once you achieve those buying and accumulation goals then maybe consider selling or entering the realm of selling.. and thereby going to some other thread to talk about those selling dynamics that are not the focus of this thread. AmInotkoreck?
Sure, another approach to accumulating bitcoin might be to incorporate both buying and selling.. but that is not what is being discussed in this thread.. that is a different strategy than what is being proposed in this thread.. and therefore likely a different topic, too.