Ornithopter

Uncommon1 version from Kaladesh Inventions · all sets

Cheapest version$131.57TCGplayer market price

Aether Revolt2017

Draft Booster 1 in 3,477 packsany version · 1.0% per box of 36

VersionPriceDraft Booster

Kaladesh Inventions · Foil #42 $131.571 in 3,477 packs1.0% per box

"Any version" adds up the chances of each version, so it is a close estimate.