![Koga's Ditto [1st Edition] #10](https://storage.googleapis.com/images.pricecharting.com/3eeb7442ea836900b7d39974c34a4e23e93a001cc1280c504f9541521079a957/1600.jpg)
Pokemon Gym Challenge · #10 · Oct 2000
Should You Grade?
The gem rate is only 19% — you'll need a very clean copy to hit PSA 10.
Factors in grading cost, turnaround time, and compounding — how fast you can reinvest profits into the next flip.
Shows the best-value tier from each grading company based on EV, cost, and turnaround. Pop = total graded population; 10s = grade 10 count.