I haven't bought one of those in years, but the most i won from a scratchoff was $100.Overall, I very rarely bought them. Many years ago an old friend of mine won $5000, however he was a real degenerate when it came to those things and it didn't take him long to piss it away by buying useless shit and yes - many more scratchoffs. I told him to quit those things while he was ahead as it was very rare to strike payouts like that, but he didnt listen. He was convinced he had a "system" lol.
Not a scratchoff, but i once matched 5 of 6 numbers in Supercash lol. It was $500 payout but it was probably the most disappointing lotto adventure i ever had because matching 6 would have been $275,000.