💡 Detailed Explanation
The woman is expressing her disappointment that an expensive piece of clothing was of poor quality, using the grammar '〜割には' (considering...). The best response is to show empathy for her disappointment. Option 1, 'Oh, that's disappointing,' does this perfectly. Option 2 sounds like unhelpful criticism. Option 3 contradicts her point, as she is saying it was *not* worth the price.