Check for extra symbols or words after the name: Cards/Pokemon released before HeartGold SoulSilver display the Pokmon level after the name in the top right , such as "Pikachu LV.12." Some Pokemon have special symbols in its stead these tend to be worth more and again, are worth investigating
Pokmon TCG Pocket Card Game - FAQs What is Pokmon TCG Pocket
Elite Trainer Boxes also typically include gameplay accessories that are useful for deck building, storage, and keeping your cards organized
The 1 in this Thin stamp is thinner than the Thick stamps, and the EDITION is also thicker
As I said earlier, I aim for 15 draw and search Trainers as a minimum (Pokemon with Consistency attacks do not count unless you have high counts of search) with 20 or so as a happy place
Another Final Fantasy IX alumni, Beatrix is clearly intended as a glue card to bring all the Equipment synergies in the deck together