Request for Multiple Options/Prices in Product

I would love a way to have multiple options (and corresponding prices) as a drop-down within the Product, where the Member could select the option they want, and be charged the corresponding price. At the end of our season, we did a “Duck Derby” raffle as a fundraiser. Members could “adopt” specific quantities of ducks at specific prices (one duck for $3, 5 for $12, 20 for $40, etc). I had to create a separate Product for each option, as the price-per-duck was lower with higher quantities.