Does my husband care?

we have been married for 3 years, I am very attentive to all his needs and wants and if he wants something i do my best to get it for him, but it seems like if i don't get it fast enough he gets mad or aggravated at me. for example we took a trip to the beach and before we went he got brand new tires on his truck, he called to tell me that one set was $650.00 and the other was $800.00 I asked him if he could get the cheaper ones so that we would have the money to go on vacation, he got mad at me and treated me like crap because he didn't get the ones he REALLY wanted. I hardly ever buy my self anything and if i do it's usually no more that $30.00, I go with out things so that he and our children can have. he went out of town to a football game (that we really couldn't afford) at first when he thought that he wasn't going to be able to go he was hateful to me the only reason we weren't going to have the money was because i had a dentist appointment the following week and i had to pay $150.00 up front but as usual what i needed was pushed to the side and i canceled my appointment so he could go to the game and when he realized he could go to the game he was all sweet. I am not sure if i'm being over dramatic ( as girls can be) but it just seems like he only cares about himself and what he wants and it feels like he doesn't care if i want or need anything as long as he gets what he needs!!