Anything expensive, you will most likely have to keep resubmitting it till you get lucky with the right grader or fix flaws before resubmitting
However, if your deck has a +1/+1 counters theme or a creature that taps for some powerful effect, you might consider Dread Linnorm
I thought it would be more chaotic, but it was all very orderly
Below that threshold, the grading fee ($25-$33) plus return shipping ($10-$20) makes the ROI marginal at best
Here are the cards, and the booster packs they're found in, for the Champion of the Sinnoh Region Secret Mission: Gastrodon #161 (Full Art / One Gold Star) - Palkia Space-Time Smackdown Lucario #170 (Full Art / One Gold Star) - Dialga Space-Time Smackdown Spiritomb #172 (Full Art / One Gold Star) - Palkia Space-Time Smackdown Garchomp #175 (Full Art / One Gold Star) - Palkia Space-Time Smackdown Cynthia #192 (Full Art / Two Gold Star) - Palkia Space-Time Smackdown Rewards: Garchomp Emblem
Incapsula incident ID: 1533000680196003340-710850455189393682