first of all this is a lottery and lotteries don't have that many people interested in them specially with such a high price for buying the "tickets" which is 130-150 USD based on bitcoin price at that moment. which means even less people will be interested in it.
secondly making a lottery to a provably fair thing is nearly impossible in my opinion. you can add a provably fair system and pick the winner in a fair fashion but that doesn't guarantee fairness of the lottery itself. you may have gotten 1000 players but had 14000 fake entries yourself (the total of 15000). nothing about such system is fair.
If all deposits are accounted for, it doesn't really matter if there are 14000 'fake' entries by the owner, as long as the coins are put in the pot so to speak....
People are able to buy more than one ticket, even if one person owns 14000 tickets, they can still lose.
If he can make the draw provably fair, I don't see any problem with a lottery like this.