My boyfriend only cares about money?

So yesterday was my bf’s birthday and I bought him 6 things he liked, but he also wanted some money to buy a pc set for gaming. I promised him that I was going to give him the money but I couldn’t (he wanted me to give him $1300). First he got so mad at me saying that he expected to have the money and that he was disappointed with me. And today he posted an instagram story saying “cash app me” just because he wants the pc gaming set. He works and has money, I honestly don’t get why he wants random people to cash app him just because he wants a pc set. And even worse, on HIS birthday he’s saying this. Is this normal?
My boyfriend only cares about money?
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