Only you can answer this question, but if you are curious about giving grading a try, and are grading for value, the safest bet is to focus on the household names: for baseball, Mickey Mantle, Willie Mays, Hank Aaron, Jackie Robinson, Roberto Clemente, Sandy Koufax, and popular Hall of Famer rookie cards are a good place to start
(Don't apply Weakness and Resistance for Benched Pokmon.) Price History (Holofoil) Price Points (Holofoil) First to last period Popular Singles Rocky Fighting Energy Deck Exclusives $0.01 Market Price: $0.27 Floatzel 37 106 Countdown Calendar Promos $69.94 Market Price: $69.90 Makuhita 068 ME: Mega Evolution Promo $0.01 Market Price: $0.29 Luxray Perfect Order Stamped Miscellaneous Cards & Products $10.51 Market Price: $10.95 Probopass 096 088 ME03: Perfect Order $0.01 Market Price: $0.95 Gastly ME03: Perfect Order $0.01 Market Price: $0.06
That means there'll be new prize packs with a brand new card pool released every February and August, starting February 2023.
Add to that plenty of ways to put additional +1/+1 counters on it and many smaller synergies throughout the Standard format, and I expect Walking Ballista to be a Standard Staple from the start
