![Goop Gas Attack [1st Edition] #78](https://storage.googleapis.com/images.pricecharting.com/43c7a9ab314f362c571f6508b93bb00d8dd0b22090a569b407e894cb4b7c2811/1600.jpg)
Goop Gas Attack [1st Edition] #78
Pokemon Team Rocket · #78 · Apr 2000
Maybe — Proceed with Caution
Should You Grade?
Raw Price
$1.97
Expected Value
$-0.43
Net Profit
$3.02
Gem Rate
31.8%
ROI
+18%
Sales / Yr
147
Negative expected value ($-0.43) — while a PSA 10 would be profitable, the probability-weighted outcome across all grades means you lose money on average at this grading tier. The gem rate is only 32% — you'll need a very clean copy to hit PSA 10. PSA 10 profit of $3.02 is thin — grading fees and selling costs eat most of the margin.
Best Tier for Flipping
Factors in grading cost, turnaround time, and compounding — how fast you can reinvest profits into the next flip.
Profitability by Grading Company
Shows the best-value tier from each grading company based on EV, cost, and turnaround. Pop = total graded population; 10s = grade 10 count.
Price by Grade
Raw
$1.97
BGS 10
$73.00
PSA 10
$56.41
SGC 10
$34.00
CGC 10
$19.99
9
$19.08
BGS 9.5
$19.00
8
$9.57
7
$8.00
31.8%Gem Rate (PSA 10)
+5 graded in 30 days
+5 in 90 days
Grade Distribution (1,467 total graded)
1,467Total
PSA 1046731.8%
PSA 963843.5%
PSA 822215.1%
PSA 7604.1%
Below 7755.1%