"I knew it was 10 grand and I just thought that's a bit too cheap really," said O'Sullivan, nicknamed "The Rocket."
"To make a maxi, it's such a massive achievement, and if they're going to pay us 10 grand, I think it's worth a bit more than that."
Once the prize goes up a bit, I'll go for the 147.
"Winning the frame clinched a 4-1 victory over Barry Pinches, and O'Sullivan grinned broadly as he left the arena in the Welsh capital of Cardiff."I like to entertain the fans," O'Sullivan said.
"It's like a film - you want them to come back and watch the next one. There's no point giving them the best ending they could ever have, let's just leave them for a better ending next time."
The incident revived memories of a frame O'Sullivan played at the World Open in Glasgow in 2010. On that occasion, he just needed to pot the black ball to complete a 147 when he decided to end the frame, on a break of 140. But after the match, the referee pleaded with him to "do it for the fans," so O'Sullivan returned to the table and sank the black.
There wasn't a prize for a 147 in that tournament.On Monday, O'Sullivan asked the match referee midway through his break what the bonus prize was for a 147, and looked visibly disappointed when told he could win up to 12,000 pounds - 10,000 for the 147 and 2,000 for the highest break of the tournament. He also asked TV commentators in the commentary box for information.
O'Sullivan has a world-record 13 maximum breaks in his career.