Here's how you can get your Phantom Forces fix for 41 percent cheaper.
The cheapest sealed booster box of 2014 Pokemon Trading Card Game XY Phantom Forces which contains 36 booster packs is currently listed for $244.95, making each booster pack cost approximately $6.80.
If you're looking to boost your Phantom Forces collection, Amazon currently has the 2014 Pokemon TCG XY Phantom Forces Darkrai blister on sale for $11.99. That product includes 3 booster packs, making each booster pack cost approximately $4. A savings of 41 percent.
The pull rates for Pokemon TCG blisters in general are unpredictable, but I've seen many people pull an Ultra Rare from that product, as seen below:
June 10, 2018 update: That product is sold out on Amazon.com with that following message: "We don't know when or if this item will be back in stock."