While the MTG Spider-Man set wasn't the most well-received in terms of mechanics and playability, collector booster packs like this offer a nice chance to open some expensive chase cards. These packs, which contain 15 cards just like a regular booster pack, may seem pricey, but compared to normal booster packs, they tend to come with with more foils, which are shiny, holographic versions of every card available in the set. They also often come with very sought-after alternate prints of existing cards and a higher chance for Rare or Mythic Rare cards.

For individual cards, I'd recommend checking out online card retailer TCGPlayer. From today until December 1, it's running a Cyber Monday deal on everything it sells – for every purchase you make, you get 10% cashback in store credit, or 13% back if you're a subscriber. So if you're a long-time player looking for metagame staples, this is a good opportunity to get more than you were expecting to finish some decks.