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thats true, its a little bit risky, but not fully. currently you can buy steem dolalrs for 80 cents. Thats 1/0.8 = 1.25
So you can make up to 25% win. In average the steem inflation per day is round about 1%, so lets say in a week 10%. So in average the price should drop 10% per week if the steem market cap stays the same. So the week average is 5% steem price drop. So in average with currently a steem dollar 80 cents you make 25%-5% = 20% win per week. Thats not too bad :)