Website, whitepaper, project and team is all fine. According to their whitepaper 2,000,000,000 HLWs is the total supply. 50% get sold in the crowdsale with a hardcap of 46,000 ETH. So 10 HLW = 0,00046 ETH => $0.4. Not that much for submitting your phone number. Not perfect (5 stars) but still good (4 stars) because the project at all is promising.