These cards are expensive mostly because they are extremely collectible and have low supply, not because they are playable, and foil reprintings wouldn't change this at all
They describe the deck as "a labour of love", and it shows
"Dark Necrofear" This card was used by the creepiest antagonist from the original Yu-Gi-Oh
To top it off, you also get 30 total booster packs featuring the Pokmon TCG: 30th Celebration expansion, including a special pack that contains three etched cards from the expansions nostalgic Classic Collection
Prosperous Innkeeper is very valuable for our Halfling Food Tribal because of its lifegain ability (On another creature EtB under our control, we gain 1 life), but on EtB it creates a Treasure token so it helps a bit with ramp too
Equip Halfling (: Attach to target Halfling you control