To +1 Choks great post, being in the market, even during the lows, really is the most important thing
Collector booster contents vary wildly between sets, so heres what you can expect from a Final Fantasy collector booster as an example: 3 foil commons 3 foil uncommons 1 foil basic land 1 non-foil showcase art uncommon 1 foil showcase art common or uncommon 3 non-foil rares or mythic rares with Booster Fun 1 card from the Through the Ages bonus sheet 1 foil rare or mythic rare that could be a colorful chocobo or a serialized gold chocobo
Whenever equipped creature attacks, destroy target permanent
Players using the Amy Rose card will want to keep buffing her with Equipment to benefit the rest of the creatures they control
Keep backup plans ready, such as additional Pokmon that can quickly reapply Sleep or Trainers that disrupt the opponent
It can be a binder, sleeves, or boxes