well if they randomize 1 winner for 1 prize section and remove that ticket then..

your chance to win per 1 prize section would be
A= Ammount of your tickets
B= Total ammount of tickets
X= Win procent (in desimal form)
And each time winner is chosen 1 ticket gets removed from total ammount of tickets

A : B = X
For example we could count luxury items win procent with 10 tickets

A=10
B= Well kozmo has ~65 tickets and many have bought 10 so there's atleast 150-200 tickets maybe in the luxury section

10:200=0.05= 5% win change for one section

Total prize sections on luxury ~32

And for the final prize section win change would be then
10:(200-31)=0.0597.. ~6% win change

So with 10 tickets on luxury items your win chance for each prize section would be most likely ~5% or worse