Weighbridge is a Normal Trap Card.
Trap Cards are normally Set first and can be activated on a later turn, often in response to an action.
On the current TCG and OCG Forbidden & Limited lists tracked here, Weighbridge is Unlimited.
YGOPRODeck lists Weighbridge for these formats: TCG, OCG, Master Duel.
A listed print of Weighbridge appears in Photon Hypernova (PHHY-EN078) at Secret Rare rarity.
Among markets shown on this page, the lowest listed snapshot for Weighbridge is about $0.85 on TCGPlayer (prices change frequently).
