
I think Misaki subconsciously thinks he isn't worth the amount usagi spends on him. But that's just my thoughts.

I feel ya. I'm not even lower middle-class. I'm in the working class. Sometimes I do feel really poor and awkward seeing middle and upper class people.

The thing is whoever the giver maybe you can't just take something so classy and be happy about it
Thats misaki's charm i think he lives usagi not for the presents and money
When you grow in middle class you're not accustomed to get things like this even if your dad does it believe me i have experienced this

I think it's definitely partially because of his caring personality. He doesn't want people to spend a lot on him. He knows saving money is much more important than spending it on lavish gifts for him.
I wonder why Misaki always complains on the "classy" presents. If i were him, i'll be gladly, honestly and proudly accept those presents (〜 ̄△ ̄)〜(๑•ㅂ•)و✧ !!! Hehe~~