Rogue SportsBook Offer- profitable if you bet randomly?

Rogue SportsBook Offer- profitable if you bet randomly? I have access to a rogue book that gives you 20% rebate on all losing weeks (ie if you lose 1000 for the week, you only have to pay 800 at the end of the week). If you win 1000 the following week, the book pays you 1000 for the following week- and so on. Basically, every week is its own week and if you lose on the week you only have to pay 80% of your losses. If you win you get 100% of your winnings. The only requirement is that you bet 15 bets per week. Question is is this profitable if I just bet straight bets randomly? Thanks in advance.
It's good in a couple of different ways, the least of which is if you bet 15 bets of all the same size. 14 bets of 100 and then 1 bet of 2K is something along the lines of what you should do if allowed. Hi variance is also better (parlays) than straight bets if done right.
I have made a spreadsheet that simulates 25.000 weeks of betting 15 random bets each week. If you make 15 bets of 110$ to win 100$ each week, you will on average loose 35$ each week