Board Thread:Game Discussion/@comment-88.97.61.110-20160611153220/@comment-25956839-20160611181732

Plan your progress, use the Wikia to know the prices of cars, farm EK with the Audi R18 e-tron quattro (2014), or if you won the Porsche 919 Hybrid (2014), it cheaper to upgrade for 100% progress. Once have enough BRL and, take advantage of showcase prices. Some bonus series can be skipped, save your BRL and in particular. Don't upgrade car, unless you have to. Race on :)

These may help:
 * RR3 Wiki:Real Racing 3 Tips and FAQ
 * List of Sales so Far
 * Upgrades Strategy For 100% Completion - Upgrade requirements and rewards to get to 100% completion
 * User blog:Lancia Stratos/What to buy to get through the Career (From EXPERT onwards) - Lancia Stratos progress from Expert to Campionato Scuderia Ferrari Nov '15
 * Thread:55043 - Automatic Calculation for Your Outstanding Cars
 * Thread:55841 - Automatic Calculation for Cars and Upgrade Costs