What is a 3 dollar Einstein bill worth?

A "3 dollar Einstein bill" typically refers to a novelty banknote or a collectible item rather than legal tender, as U.S. currency denominations only go up to $100. If it's a novelty item, its worth depends on its rarity, demand among collectors, and condition. Generally, such items might sell for a few dollars to a few hundred, but their value can vary significantly. Always check with a reputable collector or appraiser for a more accurate assessment.