It's not about the actual present though is it, or if he's one of those people who is unable to buy thoughtful gifts.
It's about the marriage counselling, and the fact that he isn't putting any effort into the relationship. That's what the gift request OP was about. She wanted him to stir his lazy brain into action, really think about what his wife and their relationship meant to him, and buy something generous to show her that.
He can clearly understand what 'generous' means- he has been on the receiving end of it. If, for the sake of argument, the tea was because he loved her more than all the tea in China, or that she was his cup of tea, a generous gift might have been afternoon tea for them both at a swanky hotel, for example.
If he was that clueless, he could, as a pp said, have gone into any department store and said he wanted to buy a generous romantic gift and they would have pointed him in the right direction.
Or indeed, he could have Googled, or joined a forum like this one for advice. Or asked his friends, or his mother, or...anyone really.
But that would have involved Effort. And he obviously couldn't be bothered.
Sorry OP, again as a pp said- the opposite of love isn't hate, it's indifference. And he is just indifferent. Stop spending on him and save your money to start a new life without him.