The phrase 'maybe higher than' is correct and usable in written English.
You can use it when you are suggesting that something is possibly a higher quantity, value, or degree than something else. For example, "Maybe the temperature outside is higher than it was yesterday."
"They were priced maybe higher than they should have been, given the slowing in the economy that we all expect".
"With Harvard here, with the New England Conservatory, with all the other schools, the number of people you meet who are warm and passionate and smart about the subject"—meaning music—"is maybe higher than anywhere else in the country.
Of all the things Howell bequeathed to me, somewhere high on that list — maybe higher than Judy Miller — is his claim that the newsroom had become fat and complacent.
The threat today, he said, "is at least as high as it was before the Sept. 11 attacks at least, maybe higher than that," adding, "You can't protect these soft targets".
"With Harvard here, with the New England Conservatory, with all the other schools, the number of people you meet who are warm and passionate and smart about the subject" — meaning music — "is maybe higher than anywhere else in the country.
But the results show that the number of iterations maybe higher than any other derivative-based algorithms.
"Maybe higher," he added.
"We were looking at something that was maybe 50percentt higher than PlayStation2," Mr. Fries said.
The scene provides moments of unexpected sweetness, as when a car stereo cranks out a Brook Benton song and a couple, maybe high on more than life, but maybe not, starts dancing and grooving together on the sidewalk, him clapping, her smiling so widely it is as if she has the sun in her mouth.
Certainly; maybe a little higher than some players.
