Update: I did find this on the HBD info/rules page:
Prizes are based strictly on the big league level and are broken down as follows:
- World Series Winner receives 5,250 Reward Points.
- World Series Runner-Up receives $25 in credits.
- League Championship Runner-Up (2) receives $12 in credits.
- Division Championship Runner-Up (4) receives $8 in credits.
- First-Round Runner-Up (4) receives $4 in credits.
*World Series winners who used a promo code or took over a team without paying receive $25 in credits instead of Reward Points.
I know there are other things that earn credits like the first 2 in sportboy's post. You also get a $10 credit if you have been in a world for 5 consecutive seasons.
One I don't have an explaination for is recently I recieved 2 different $8 credits in the same season for the same world. One was the $8 for losing the dision round of the playoffs that was paid out at the end of the season. What is the other one for? It arrived about 12 days prior to the end of the season. Do they pay out anything for minor league playoff wins? I did have both my Low A and AAA teams win their World Series.