but lottery tickets they can give million without necessarily having to pay anything to users, as only few people win the final prize.
This isn't true. The more tickets, the bigger prize pool.
So, with giving users free lottery tickets, they increase the value of prizes and it's not that they don't pay anything for free lottery tickets.
1 RP prize = 1 satoshi;
1 satoshi prize = 1 satoshi (only if user is able to accumulate 100,000 RP balance);
1 lottery ticket prize = 0,12066 satoshi (77,567,869 lottery tickets equals to 0,09359515
BTC prize pool for 10 winners).
Proportionally it's more expensive for the site to reward users with satoshis prizes, next it comes RPs and in last place it comes lottery tickets.
Nice argument and calculations,it is clear that the lottery tickets are in last place and that is why that is the prize that falls the most often on the reels when we use our WoF spin.In the end the weekly lottery is something to keep users with hope,almost always is a false hope for most of us as only 10 persons win something out of near 50 million users that the site has a user base.We keep hoping that maybe this coming Sunday we will hit a big prize because the last prizes are worthless from 7th to 10th place are not relevant at all but the top prize and the second one are a good substantial amount for most of us.