$30/month on lottery?
Here's some numbers to consider:
$30/month into low-fee, dividend-reinvestment index fund (11% per year long term yeild, no day trading here):
$30 per month at 11% per year (disregarding tax but adjusting for 3% inflation)--
10 years = $5,418
20 years = $17,168
30 years = $42,652
40 years = $97,922
50 years = $217,796
Now here's a tiny investment that isn't just a "may turn out to be a big gain."
If you're scared of the stock market, then here's the numbers for a Roth IRA (assume 6% average), which you don't have to pay any taxes on when you cash it out by the way:
$30 per month, 6%, no taxes taken from withdrawal, assume 3% inflation
10 years = $4,173 today's dollars
20 years = $9,756
30 years = $17,223
40 years = $27,211
50 years = $40,572
This is guaranteed cash in your pocket, tax exempt withdrawal.
Lotteries are for fun, not profit. I can think of cheaper entertainments.