The top players are under contracts with cue sponsors, usually one year deals. They are paid a monthly fee. Could be anywhere from 1K-3K month or more. Shane is being paid magnitudes of that!
I negotiated Dennis' cue contracts, when he was on top of his game. First Tiger for six years and then Meucci one year. $1,500-2,000 a month on both of them, plus a % on his line of cues.