This particular organization raised 150k. The CCHF organization itself raised over 600k in the goral. There are dozens of other organizations each pooling into the goral. There is no way they are selling only 2500 tickets total. This must be the total tickets for this particular organization, not the total sold. If so, the ad is even more misleading.
“Odds of winning are no worse than 1 in 150,000.”

To be fair it says "Odds of winning ANY PRIZE are no worse than 1 in 150,000.”
you left that out.
Seems like there are some other prizes to be won besides the 100k