What are my statistical chances of winning something in this small Rotary Club lottery?

True, but the whole point is that the extra money generated goes to good works in the community vs hookers and blow. Buying a ticket is a tax deductible donation with a small possible upside. Almost 100% of the ticket sales are professionals and business owners etc. buying them as a donation/favor from other professionals.

Sorry, even for a charitable organization, the cost of your lottery ticket is not deductible. So says the IRS.