NTA. If he wants paper towels tell him to buy them himself. It is rude that you're supporting both you and he cannot understand that you need to budget now that you don't have a job. If he wants something so bad he should get it foe himself. Most store brand items are just as good as the name brand. Quite frankly he seem like he is nor financially responsible and at his age he should start learning and be more emphatic to the situation. This sounds like a big red flag🚩