[Method] make money by selling bitcoin / altcoins

so if you buy 1000 $ you get 1061 and you sell it for 120 % you get 1273
site link https://bitflip.li/?ref=vi7b89mshrt
where you can sell your btc ?
https://localbitcoins.com/?ch=hptk

price today was 6299.9 when it was 6928 $ on preev so its 628 .1 difference between em and you can make 20 % byselling it in forums or localbitcoin and thats is only for btc there is eth and altcoins for cheapr price