The odds of winning the Lotto are very slim. I think 649 is like one in 13 million, and Super 7 is like one in 19 million. That being said, not to insult anyone, but the lotto has often been called the idiot tax by many. Reason why is that your chances of winning are astronomically against you. I believe I read a statistical analysis of your odds of winning if you buy one ticket or a thousand tickets is not that much better. If you were to buy a thosand tickets your chances of winning the big one is still less than one percent.
With that in mind, if you can't afford to play alot cash, you shouldn't because if you play one dollar or a thousand dollars your chances of winning the jackpot don't significantly improve. Play what you can afford, and only play money you don't require to maintain your lifestyle. i.e. don't play 649 or Super7 with your rent or grocery money.
I think the odds of getting struck by lightning is one in two or three thousand, and how many of us have been struck by lightning? With that in mind spend what you can afford. Even if you had played every possible combination for a particular draw you can end up in the red if there multiple winners for a jackpot.
Basically we would all be better off if we invested our lottery money in the stock market, even though stocks have been doing terrible lately. It is said if you invested five dollars a day in the stockmarket (ie saving five dollars a day and investing it monthly) in fifteen to twenty years with compounded interest you can be a millionaire. Granted this is only true if you know whats going on and you do your homework, or had an honest competent broker who invested for you. I know 15-20 years is a long time, and we live in the now generation. But look at the odds of hitting the jackpot for a particular set of numbers. I believe the chance of one set of numbers coming up was calculated at 160-180 years. Thats 2-3 generations depending on the lifedspan of individuals, and when you compare that to 15-20 years its not so bad.
Sorry I wrote this essay, but I just wanted to say don't bet your life savings on it, or get depressed because you can't spend a small fortune on the lottery because its kinda like a carrot people dangle infront of a donkey that 99.99% of people will never win. I would estimate if you played 200 dollars a week in lotto you would be lucky to win half of what you spent back because the odds of getting the upper prizes after the ten dollar prize gets more difficult statistically. With this, I am just saying play responsibly, and play with money you can afford to lose. Also in writing this post I didn't write this with the intent to offend anyone, I just wrote it in response to be informative and I think it was Randal who said he has played and only had lost money.