I like ur optimism. Using 2017 as an example, sales margin is 12%, wages and rental alone eat 9.7%(these 2 are the biggest opex), plus some minor expenses, net profit comes down to 13551. That's 0.1% of total revenue. I don't see this percentage can be improved that much after more shops are opened. Wages and rental is proportional to shops. And there will be extra cost of open new shops. I think the next year might even be a loss.