I(21F) was invited to a dinner party by my brother(21M) a few days ago. He asked if my boyfriend and I wanted to come over for Birra tacos and Drinks to which I replied “probably but I’m not sure about our schedule so I’ll get back to you” I then followed up with “would you like me to bring anything” and he replied “no but you could both give me $10 to cover the cost of ingredients” I thought this was a little strange but I just thought about it for the time and did not officially say yes or no. Cut to today I asked my bf if he wanted to come and he said he would be a bit too busy so I informed my brother of this and said that I would likely come but I would be late because my friend and I were going to see a movie, he said to bring her as well and I asked “will she also have to pay” and he said “yes I’m making everyone pay $15” I asked what happened to the original price of $10 to which he replied that he spent $110 dollars on this meal including alcohol. He then went on a long rant about how I can’t buy tacos for $10 anywhere, and that he’s actually losing money by only charging $15 per person, and that he’s a broke college student and he can’t afford to cook for 8 people for free. This long rant made me feel uncomfortable and hesitant to come because of his attitude. I told him I’d probably just sit this one out- not thinking it would be a huge deal because he can always just keep the leftovers for himself but he got pissed. He said that I caused him to lose $30 and that I shouldn’t expect him to cook for free. He kept telling me the price he was charging was a steal and I won’t find a good deal like that anywhere and now he’s going to have to charge the other guests more. He proceeded to say that he’s revoking my invite and will reconsider inviting me to any future dinner parties. I told him I would’ve been fine just bringing a bottle of alcohol or a side dish but he’s made the whole situation very transactional like he doesn’t necessarily want me to be there he just wants me to pay for the groceries he bought before I even agreed to come. He went on another long rant about how everything is so expensive and I won’t find prices like that everywhere and he just wants to bring people together and it’s reasonable to ask for money because he spent so much on groceries. So AITA?