Talk:RR3 Wiki:Upgrades Strategy For 100% Completion/@comment-24.112.159.170-20180210183301/@comment-26829117-20180211104341

Firstly, it's always good to get your math(s) right.
 * Ferrari FXX K costs 950 to buy full price
 * Ferrari FXX K costs 760 to buy with showcase discount in Italian Prime
 * Ferrari FXX K could be won for free in No Compromise. Yes it cost 274 in upgrades but the car still cost nothing to buy Gold, Gold and More Gold
 * Ferrari FXX K cost 1419 to fully upgrade for Italian Prime
 * Italian Prime gives a reward of 82
 * Ferrari FXX K (Exclusive Series) required no additional upgrades and gives a reward of 152

So worst case, Ferrari FXX K costs 950+1419 = 2369 to fully upgrade and returns rewards of 82+152 = 234 for a total net cost of 2135. This reduces to 760+1419-82-152 = 1945 if you get it at showcase discount and 1419-82-152 = 1185.

There are just too many combinations to include the cost of obtaining the car as well. In addition, this car has had three upgrade sales at 20-25% each time. It would be unfair to use these discounts in this calculation.

So what would you prefer instead? If you fully upgrade the car, without a discount sale, then it costs you 1419 and you get 82 and 152 gold rewards from two series. This is what these tables show. Always happy to consider improvements and of course there is always Plan B.