Like corn and soybean futures and put options, calls are offered through the CBOT. You have to search a little more to find options prices, but they’re there. Put and call option prices premiums are listed, based on various futures quotes. According to CME, buying a call option “gives you the right, but not the obligation, to buy a product on the underlying futures contract at a specific price. The underlying futures contract is the one with the same delivery month as the option.”