Sounds like a good idea to me. I usually just grab a few and take them home, but sometimes I scratch them in the store. Take today for example. I bought a $20 Maximum Green and it lost. I purchased another ant it won a ticket. The numbers were going down: 005 lost, and 004 won a free ticket, so statistically speaking even if there was a $100 winner in there, the best I could have hoped for would been still losing $20, assuming it was the last ticket in the roll, and it was $100, but who knows, someone might have already had a $500 winner. I cut my losses and kept the other three twenty dollar bills in my pocket.
A strategy that I had been playing was to spend $40, and I still do this from time to time: a $20 ticket, a $10 ticket, and two $5 tickets. Sometimes it pays off, sometimes it doesn't. My favorite strategy of recent is to buy three different $0 tickets, and I know that most people would say that I would have a better chance of getting a winner if I got three of the same ticket, and i cannot find fault in that logic, but there is something else to consider. Most players have a favorite ticket. If that player is buying $20 tickets, he is most likely going to keep trying to find that big winner if he has the cash, and like you said, once he finds his $100 winner, he is done. Unless he has a lot of money to spend, say $1200 to buy all four rolls of $20 tickets that we have in GA (They are $300 a roll, no matter the denomination), then unless that happens, there is a good chance that there is a winner in one of those other rolls.
I know I have had this happen to me in the past. I kept on buying tickets, and the store had tables in the back so you can scratch in the store, smoke cigarettes, and play the video poker games. I had been buying ticket after ticket. I finished a $20 roll with a free ticket, so I started on the next roll. I was buying one at a time, and someone swooped in and bought two in a row, and then hauled ass out of the store. They had been in there a while. I am sure they lurked and knew the time was right for a winner. I spent $120 so they could (most likely) win $100. When I saw it was on ticket number three, my gut told me not to buy and I didn't. It sat there the rest of the time.
I used to keep very detailed Excel spreadsheets, and had a page for each ticket at one point. I would record the store where I purchased them, the entire twelve digit ticket number(s) XXX-XXXXXXXX-XXX, and the validation numbers. I was shocked to find that I won two to three times more frequently at some other stores, and that most all of my winners at that particular store were mostly all small amounts like free ticket to twice the face value of the ticket. I am not in the market for that, so I very rarely play at that store anymore. I was consistently in the red at that store, and in the black at the other.
Listen to this if you want to learn something. I am not God, nor do I represent that I have any special skills that help me win. I kept reading that you just had to be at the right place at the right time to win, but I did not believe it, but now I do more or less, even though I do believe that clerks count the tickets and pick tickets at the right time, and I d think some of them help out their favorite customers. That being said, I spent $300 on a roll of $3,000,000 taxes paid. It is a $20 game, and there are 15 tickets in a roll. I ended up keeping $135 of the $300 that I had spent, for a loss of $165. The biggest winner in that pack was $60. The very next day I went to another retailer, and bought just one of that same ticket, and it won $300! So you have to be at the right place at the right time.