Final answer:
The provided passage does not give information about Ted returning an engagement ring or how much he received for it, hence the question cannot be answered with the given text.
Step-by-step explanation:
The passage provided speaks about a character named Stuart giving a ring with an immense sapphire to a woman, which symbolizes a token of affection or engagement. However, regarding the student's question: How much did Ted get for the engagement ring when he returned it? there is no information in the provided text that indicates the amount Ted got for the ring or any details about Ted returning an engagement ring. Consequently, without additional context or information, this question cannot be accurately answered based on the provided passage.