"supply and demand" (facepalm)
PRICE is not VALUE
also the PRICE is not formed simply by supply and demand

what if i told you an exchange has at most times a supply of 50k coins per per exchange and the similar amount of fiat balance day in day out.

you would still see a markets PRICE vary even if there were a fixed amount of sellers supplying coin and a fixed amount of buyers demanding coin.

the variation is not simply supply and demand changes.
its actually
desire and utility(speculation) :- the ups and downs
cost:- bottom line the majority wont sell below
expense:- the top line the majority wont buy for
value:- the minimum sellers would sell for and maximum buyers would buy for

(i personally concentrate on minimum value. as thats something that can be seen easily beyond the speculation)