A commodity exchange system enables trading and redemption of contracts of commodities with enhanced user experiences and functionalities. A user may pre-purchase a quantity of a commodity (e.g., gasoline) by purchasing a contract of the commodity at a currently traded price of the contract, which provides the user future rights to receive a quantity of the commodity at a strike price (which may be zero). The users may sell (or short sell/underwrite) these contracts through the commodity exchange system. The owner of a contract redeems the contract to obtain the commodity by transacting with a commodity supplier at the strike price, and original seller of the contract or an underwriter associated therewith pays the difference between a spot (market) price and the strike price upon redemption of the contract.
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