I wouldn't suggest puting all your money into anything, not just Bitcoins. Every investment is a risk and there is always the danger of losing money so you have to invest with care and you always have to have some back up. Don't ever invest more then you can afford to lose.

i think bitcoin becomes very expensive one of them is due to the limited amount of currency, in addition to his many ads in various social media that tells that bitcoin will be a global currency is a factor that makes bitcoin very expensive

maybe zebpay is paying more than others but its better you trade with other companies

I am not sure what you want to do with this price.

Thats great.  Thank you.  Please provide a link to the clip

 Funds>Deposit Withdrawals in the top bar of the  page.Then,They are segmented based off the sell orders that are placed on the other side. They will sell you first whatever was placed first and then breaks into higher and lower price points at which you bought. You should be fine but use 2FA for sure. However note that if you leave it for weeks and something does happen exchanges don't put all of that in cold storage but that is unique to each exchange. Check with the exchange prior to doing so because when they are on the exchange you don't control private keys which means those funds are actually not yours at that point in time.