Just a little math I did:
If you bought component items at minimum, Any-95 OVR Redzone Royale sets are the cheapest way to get to a Rookie Premiere item. That means 25,961 coins x 4 = 97 OVR Redzone Royale x 6 = 99 OVR Redzone Royale x 4 = 99 OVR Rookie Premiere = 2,492,256 coins. The total Training Quicksell Value of the components would be 9,600,000, which is well over the 650,000 Training Quicksell Value of any 99 OVR item. If you follow the scale on the Training Quicksell Values list, you'll see that in the case of the higher-OVR items, each one will have a Training Quicksell Value equal to about 80% of the product of the five component items typically needed to build it (e.g. one 98 OVR item with a 410,000 Training Quicksell Value can commonly be built from five 95 OVR items with a total Training Quicksell Value of 500,000).
If you extrapolate a training cost for theoretical 100+ OVR items using the above-mentioned scale, only a 105 OVR item would have a Training Quicksell Value in excess of the total number of 95 OVR items needed to build a single Rookie Premiere item this year. So if you had trouble scraping up enough binder trash to make a Rookie Premiere, this is why.
