Man, talking about Goku's power levels in the Saiyan Saga takes me back! Initially, when he arrives to fight Raditz, his power level is around 416—pretty modest by later standards, but still impressive for Earth at the time. What’s wild is how fast he grows. After training with King Kai, his base level jumps to over 8,000, and when he busts out the Kaio-ken technique, he multiplies that further. The Kaio-ken x3 pushes him past 24,000, which is just insane compared to where he started.
Then there’s the fight against Vegeta. Goku’s pushed to his limits, using Kaio-ken x4 to hit around 32,000. It’s crazy to think Vegeta’s scouter still can’t believe what’s happening—Goku’s growth defies all Saiyan logic. That whole saga sets the tone for the series: no matter the odds, Goku’s always got another level hidden away. I love how it foreshadows the absurd power creep later in 'Dragon Ball Z'.