The niche they were aiming for was superseded by set boosters in the end, but theme boosters stuck around, often taking up shelf space in stores and going unsold
In fact, even the sets name refers to these two pirates
Protect your cards with Everdell Card Sleeves Expansion (600 premium sleeves)
If you play all four copies in your main board, your opening hand has a 40% chance to have one copy of the card and a 60% chance to not have any of the four copies
Mix of singles and strategic pack opening Open 1 booster box at MSRP if you can find one ($144) for the bulk commons and opening experience, then buy all remaining singles including the Charizard ex SIR, all IRs, and all SIRs in NM via TCGPlayer
The remaining Fake Numbers are later destroyed offscreen