Would you want a very expensive gift?
Let’s assume it is completely fine with you that the person is spending the money, and you have no problem financially maintaining the gift.
Would you want a surprise house, car, very expensive piece of jewelry, vacation, given to you? Is it exciting? Or, are you annoyed you didn’t get to pick it out yourself?
Does it make a difference who it is from? If it is from your spouse or parents are you more inclined to accept it or feel comfortable?
My husband says he always wishes to get a surprise car as a gift, and I would never want someone to surprise me with a car, because I want to pick the model, the color, etc.