Giving Levels for the Plebs

For the mustang club; how does the point system work? point per dollar? Is it going to make a huge difference if I go with "Pony" instead of say "Colt" or do I need to pony up for "Mustang".
Red & Blue $75 to $149
Colt $150 to $249
Pony $250 to $499
Mustang $500 to $999
Red & Blue $75 to $149
Colt $150 to $249
Pony $250 to $499
Mustang $500 to $999