Here's my quick back-of-a-napkin math:
Renting: $4500 x 45 years = $202,500
Resale purchase: 431 points x $70 per point = $27,090
$5.31 dues x 431 x 45 years = $105,120
Total for resale = $132,210
So buying resale saves $70,000 over the course of the contract. And that's not taking...