S-V-O stands for Subject-Verb-Direct Object. If you take a look at the sentence above, you will see that <em>Jim </em>is the subject, <em>gladly accepted </em>is the verb, and <em>the price of $100 </em>is the direct object. The easiest way to determine whether something is a direct object or not is simply to ask - <em>what.</em>
For example: <em>What did Jim gladly accept? - </em>And the answer is <em>The price of $100.</em>
S-V-I-O stands for Subject-Verb-Indirect Object; S-V-A stands for Subject-Verb-Predicate Adjective; S-V-N stands for Subject-Verb-Predicate Nominative, none of which appear in this sentence.