Flipkart - The amount looted

I bought the Asus Zenfone Max Pro M* on *th July ****.
The product Details:
*GB RAM/** GB ROM/COST RS.*, ***
Two days before buy the above one I was seen the same model with different configurations:
*GB RAM/** ROM/COST RS.*, ***.
Then next day it went up to RS.**, ***.
So, I thought to buy the product (*GB RAM/** ROM COST RS.*, ***) because it met my budget but I liked to buy Rs.**, ***, but I did not buy because of the little high cost.
Then I decide to buy the *GB RAM/** GB ROM COST RS.*, *** and bought it.
After that I was ordered back cover and temper class, so it was reached on **th July ****.
Suddenly the price dropped from RS.**, *** TO RS.*, *** for *GB RAM/** ROM
Then I decided to assemble it on **th July ****. At that time, my father seen the same model in flipkart on **th July, the rate was decreased.
The product Details:
*. *GB RAM/** GB ROM/COST RS.*, *** to RS.*, *** as on **th July ****
*. *GB RAM/** ROM/COST RS.**, *** TO RS.*, *** as on **th July ****

My question is:
*. How the price will drop down with in one week?
*. What is the strategy followed by seller and flipkart?
*. How the same seller sell it higher price on last week and how it sells in lower price on this week?
*. Why the price was high on the product
(*GB RAM/** ROM/COST RS.**, *** TO RS.*, ***) and why it’s low on this week?
*. Is this fraudulent on product or with the customer by flipkart?
*. If the price fixed by seller means why he kept the price on last week as High and why ots low on this week?
*. What about the customer sentiment who all bought for higher price till **th July **** and how is this happening?

If seller fixed the price means,
for e.g.: last week ** people bought *GB RAM/** ROM/COST RS.**, ***, after price drop down cost RS.*,***. So per item Rs.*, *** dropped. Then seller looted Rs.**, *** from the customer. I don’t know who looted.