Box art - The Dark Knight Rises

The Dark Knight Rises Purchasing Additional Credits

The Dark Knight RisesMore guides, cheats and FAQS
It takes a ton of playtime to afford the best upgrades and gear. If the slow slog doesn't sound appealing, break out the credit/debit card and buy credits the easy way.
They come in the following amounts: 2,000 ($1.99), 5,500 ($4.99), 12,000 ($9.99), 26,000 ($19.99), 70,000 ($49.99), 150,000 ($99.99).