For another board I did something similar, in going through old issues of the Observer and seeing what WCW paid various people from around late 1997 to 2000. Here are some of the details:
*Michael Buffer paid $500,000 for his role in the film 'Ready to Rumble' and for the rights to use the phrase.
*KISS to receive $500,000 to perform to songs on the 8/23 Nitro.
*Karl Malone paid $900,000
*Jay Leno paid $1,000,000
*Dennis Rodman paid $2,250,000
*Hardcore Battle Royal at Bash at the Beach '99 which ended up with several of the roster injured cost over $100,000 to produce
*Master P getting $200,000 per Nitro appearance
*Swole (Master P's bodyguard) signed to a $400,000 a year contract. Master P also convinced WCW to sign both Chase Tatum and Teddy '4x4' Reade to deals although Meltzer doesn't mention how much they received.
*Tank Abbott $300,000 a year
*Wrath $350,000 a year
*Stevie Ray $750,000 a year
*Vampiro $350,000 a year
*Hak (The Sandman) $250,000 a year
*Scott Norton $800,000 a year
*Rick Rude in late '97, when the sole purpose for signing him was with to screw with Vince as he appeared on a taped Raw with beard and a live Nitro sans, signed a 3 year contract at $300,000 a year
*John Nord $150,000 a year
*Kevin Wacholz $150,000 a year (after his late '97 tryout, wrestled a grand total of two matches)
*Lanny Poffo $75,000 a year (for at least 3 years, and only managed to locate him wrestling on two occasions)
*Bam Bam Bigelow $450,000 a year
*Mike Awesome signed a 3 year deal for $300,000 a year. He also received a $250,000 signing bonus, and WCW had to pay ECW a further $250,000 after Paul Heyman went to court and got a restraining order against him showing up on Nitro
*Eric Bischoff Tonight Show set cost $70,000