As each gate is designed to teach you something about the game, it's important to play them if you aren't 100% familiar with YuGiOh and its mechanics, but even long-time players should do so for practice and to gain the rewards
SAR specifically tends to sit in the upper-middle range of the secret-rare numbering (often the top third of the extended checklist past the base set)
Youve got monsters that do battle for you, Spells that create changes to the field, and sneaky Traps just waiting for your opponent to spring them
CCC - Do the Wave (10+) Effect: Does 10 damage plus 10 more damage for each of your Benched Pokemon
While Rayquaza saw a massive decline, it was short-lived, rebounding in a big way to exceed its original plateau of $35
A box recently sold for $2,500 on TCGPlayer back in May