Don't shame someone for money "what's up, it's pretty cheap".
"Well, you can afford it once."
"We all go, you come too" For one, the amount may be insignificant, for another it may be a significant part of the budget. A person should not be forced to explain why he does not want an expensive restaurant, a trip or a gift. Tact is the ability to take into account other people's abilities without asking unnecessary questions. - I will try to be more tactful - I don't appreciate other people's budget Psychoanalyst.